JPS587968Y2 - Connection structure between deflection yoke and auxiliary magnet - Google Patents

Description

[Detailed description of the invention] The invention consists of a trumpet-shaped deflection yoke that is fitted onto the outside of the color cathode ray tube, and a thick ring-shaped auxiliary magnet for purity and convergence.
It relates to a connection structure devised for the purpose of allowing it to be handled as if it were a single unit.

Conventionally, the deflection yoke is fitted and fixed onto the conical cone of a color cathode ray tube, and the auxiliary magnet is fitted and fixed onto the small diameter cylindrical neck of the color cathode ray tube.
Because each tube was manufactured separately, when it was attached to a cathode ray tube, each tube was fitted onto the outside of the tube, its position adjusted, and fixed.

On the other hand, it is known that if the auxiliary magnet for purity and convergence is positioned at the tip of the third grid in the cathode ray tube, fitted externally, and adjusted and fixed, the amount of adjustment can be increased.

The present invention was devised in consideration of the above-mentioned problems and conditions, with the aim of simplifying the positioning of the auxiliary magnet and reducing the number of man-hours required for attaching the auxiliary magnet.

The embodiment will be described with reference to the accompanying drawings. Reference numeral 1 denotes a deflection yoke having a trumpet shape, and this deflection yoke has a trumpet-shaped core 2 wound with coils 3 for vertical and horizontal deflection. A generally trumpet-shaped resin frame 4 having some elasticity is held between them.

A cylindrical portion 5 with a closed end is formed protruding from the small diameter portion of the frame 4, and the center of the end closing wall 6 of this cylindrical portion 5 is opened, and a plurality of groups of protrusions 7 are formed on the edge of this opening. are prominently coupled.

8 is a fastening metal fitting 9 formed on the outer surface of the tip of the group of protrusions 7
It is a stopper.

Reference numeral 11 denotes an auxiliary magnet shaped like a thick ring, and this auxiliary magnet includes a slightly elastic longitudinal cylindrical bobbin 12,
It consists of a plurality of ring-shaped magnets 13 that are rotatably fitted around the center of one end of the bobbin, and spacers between these magnets.

In the opening at one end of the bobbin 12 far from the magnet 13,
A plurality of axial notches 14 are formed, and a group of hooks 16 for preventing removal are formed on the outer surface of the tip of a group of protrusions 15 formed by these notches 14.

17 is the magnet 13 of the bobbin 12. A plurality of protrusions are formed in the opening at the other end, and these protrusions are formed by axial cuts 18.

Reference numeral 19 designates a stopper of the metal fitting 20, which is formed on the outer surface of the tip of the group of protrusions 17.

In the present invention having the above-mentioned configuration, the 15 groups of protrusions of the bobbin 12 are squeezed inward against their elasticity, and the 15 groups of protrusions are inserted into the 7 groups of protrusions of the frame 4 and the cylindrical portion 5. 2, the hook 16 is brought into contact with the closing wall 6, and the deflection yoke 1 and the auxiliary magnet 11 are prevented from being removed and are integrally connected.

After this, in the small diameter cylindrical part t of the color cathode ray tube T,
First, the deflection yoke 1 and the auxiliary magnet 11 connected thereto are fitted, and the trumpet-shaped deflection yoke 1 is fitted onto the cone portion C of the cathode ray tube T, while adjusting the position of the deflection yoke 1. A spacer, an adhesive, and a fastener (not shown) are fixed to the cathode ray tube T using metal fittings 9.

Next, while pulling the auxiliary magnet 11 slightly outward, tighten the auxiliary magnet 11 with the metal fittings 20.
is fixed to the cylindrical portion t, and the attachment of the deflection yoke 1 and the auxiliary magnet 11 to the cathode ray tube T is completed.

When fixing the auxiliary magnet 11 to the cylindrical part t of the cathode ray tube T, the deflection yoke 1 side of the auxiliary magnet 11, in other words, the purity magnet p of the auxiliary magnet 11 fixes the cylindrical part to the third grid inside. The length of the bobbin 12 and the length of this bobbin 1 are adjusted so that the bobbin 1 is located closer to the inner end of G.
Of course, the positions for attaching the magnets 13 to the magnets 2 must be determined in advance.

The present invention as described above has a trumpet-shaped deflection yoke 1.
A cylindrical part 5 with a closed end protrudes from the small diameter part of the frame 4, and the center of the closing wall 6 of this cylindrical part 5 is opened, and the slightly longer length of the auxiliary magnet 11 is shaped like a thick ring. A plurality of slightly elastic protrusions 15 are protruded from one end opening of the bobbin 12, and the protrusions 15 are slidably inserted into the cylindrical part 5 on the outer surface of the tips of the protrusions 15, Since the closing wall 6 forms a group of hooks 16 to prevent removal, the deflection yoke 1 and the auxiliary magnet 11, which are separate devices, can be connected extremely easily and integrated into one. In addition, the length of the bobbin 12 and the length of the bobbin 12 can be changed.
If the positions of the magnets 13 are determined in advance, the auxiliary magnets 11 can be moved very easily to the cathode ray tube T.
This has the advantage of being able to be positioned closer to the third grid G in the grid.

In addition, since the bobbin 12 can slide freely within the central opening of the closing wall 6 of the cylindrical portion 5, the state of connection between the deflection yoke 1 and the auxiliary magnet 11 can be finely adjusted as necessary.

In this case, since the hook 16 is provided, there is an advantage that the auxiliary magnet 11 will not be removed from the deflection yoke 1.

[Brief explanation of the drawing]

Figure 1 is a front view of the embodiment of the present invention before connection;
The figure is a cutaway sectional view showing the state in which the same as above are connected and used.

Claims (1)

[Scope of utility model registration request] A cylindrical portion with a closed end protrudes from the small diameter portion of the frame 4 of the deflection yoke 1 which becomes a trumpet shape, and the center of the closing wall 6 of this cylindrical portion 5 is opened, and the shape becomes a thick ring. A plurality of slightly elastic protrusions 15 are protruded from one end opening of the slightly elongated bobbin 12 of the auxiliary magnet 11, and the outer surface of the tip of these protrusions 15 is slidable into the cylindrical portion 5. A connection structure between a deflection yoke and an auxiliary magnet, characterized in that a group of hooks 16 are formed which can be freely inserted and prevented from being removed by the closing wall 6.