JPS587971Y2 - Deflection yoke device - Google Patents

Description

[Detailed description of the invention] The invention relates to a deflection yoke device used in television receivers, and in particular, in color receivers, when the deflection yoke is attached to the neck of a cathode ray tube, the attachment of the deflection yoke is This invention relates to a deflection yoke device having a structure that allows for extremely simple operation.

Recently, as a deflection yoke device installed on a cathode ray tube, with the improvement of accuracy of the cathode ray tube and the deflection yoke itself,
A device has been developed that can obtain optimal convergence characteristics without using a convergence yoke, as well as optimal purity characteristics, by simply moving the deflection yoke slightly in the longitudinal direction relative to the tube axis. There is.

In this case, it is necessary to have a mechanism that allows the deflection yoke to be easily adjusted for movement in the longitudinal direction of the tube axis within a minute range, and that once it is installed and fixed, it is firmly fixed so that the deflection yoke does not move. is required.

The present invention relates to a deflection yoke device developed in view of the above-mentioned problems, and more particularly to a deflection yoke device having a structure that securely fixes the deflection yoke at the head thereof.

An embodiment of the present invention will be described in detail below with reference to the drawings.

In Figures 1 and 2, 1 is the deflection yoke main body;
A core 2, a vertical deflection coil 3 wound directly on the circumferential surface of the core 2 in a toroidal shape, a bobbin 4 which is made by joining a pair of semi-annular bobbins attached to the inner surface of the core 2, and a bobbin 4. The horizontal deflection coil 5 is wound around the inner surface of a bobbin 4 in a hollow shape, and is mounted on a cathode ray tube 6.

In the deflection yoke main body 1, a plurality of retaining protrusions 8 are provided at predetermined intervals on the edge of the circumferential portion 7 at the open end of the head of the bobbin 4.
The deflection yoke body 1 extends toward the surface of the expanded portion of the cathode ray tube 6, and an elastic piece 12 made of rubber or the like is attached and fixed to each retaining protrusion 8 with one end touching the surface of the cathode ray tube 6. A back cover part 10 having a tightening band 9 is formed at the tail part of the deflection yoke body. 9 respectively held by cathode ray tubes 6
mounted on top.

Here, in order to provide spring properties to the retaining protrusion 8 provided on the circumferential part 7 at the open end of the head of the bobbin 4, as shown in FIG. A slit 11 extending in the axial direction is provided.

Next, the elastic piece 1 is attached and fixed to the engagement protrusion 8 of the bobbin 4.
2 will be explained.

As shown in FIG. 4, the elastic piece 12 has an L-shaped groove 13 inside thereof corresponding to the circumferential part 7 and the retaining protrusion 8 of the bobbin 4, and has an end part 14 that comes into contact with the surface of the cathode ray tube 6. A wedge-shaped tip 15 is formed in order to increase the contact area, and the wedge-shaped tip 15 has several grooves 16.

Here, a method for attaching the elastic piece 12 to the engagement protrusion 8 of the bobbin 4 will be described.

First, the horizontal groove 13a of the L-shaped groove 13 formed in the elastic piece 12 is fitted into the circumferential part 7 of the bobbin 4 where the retaining protrusion 8 is not provided, and then the elastic Slide the piece 12 along the circumferential portion 7 to the position of the engagement projection 8, and as shown in FIG. 5, fit the vertical groove 13b of the L-shaped groove 13 into the engagement projection 8 and fix it. It is something that intimidates people.

As shown in FIGS. 6 and 7, the elastic piece 12 to be attached and fixed to the engagement protrusion 8 is formed into an oval shape according to the extending direction of the engagement protrusion 8. or elastic piece 1
2 may be formed into a substantially S-shape in order to give spring properties to the shape itself.

In the deflection yoke device having such a configuration, the deflection yoke main body 1 is mounted on the cathode ray tube 6, and the deflection yoke body 1 is mounted on the cathode ray tube 6, and the deflection yoke main body 1 is mounted on the cathode ray tube 6, and the deflection yoke main body 1 is The convergence characteristics and
Once the safety characteristics are adjusted and the optimum position is reached, the tightening band 9 is used to fix the position.

As described above, the deflection yoke device of the present invention is constructed as shown in the claims for utility model registration, and the elastic piece is directly attached and fixed to the bobbin, and the Good deflection characteristics can be obtained just by adjusting the motion, greatly improving workability, and providing an effective head fixation method for non-oscillation deflection yokes.

Also, since the elastic piece can be inserted from the front of the deflection yoke,
The installation is easy, the positioning is accurate, and variations due to installation can be reduced.

Further, a retaining protrusion for attaching and fixing the elastic piece is provided on the circumferential edge of the open end of the head of the bobbin, so there is no problem in assembling the coil, and the structure can be extremely simplified.

The movement adjustment in the front and back direction of the deflection yoke can also be performed using the elasticity of the elastic piece itself, the spring force of the retaining protrusion, etc., and has various effects such as a relatively wide adjustment range. This is effective as a convergence type deflection yoke device.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a deflection yoke device according to an embodiment of the present invention, FIG. 2 is a front view, FIG. 3 is an enlarged perspective view of a retaining protrusion, and FIG. 4 is a perspective view of an elastic piece. FIG. 5 is a cross-sectional side view of the elastic piece attached and fixed to the retaining protrusion, and FIGS. 6 and 7 are cross-sectional side views showing the fitted state of the elastic piece and the retaining protrusion in other embodiments. It is. 1...Deflection yoke body, 4...Bobbin, 6...Cathode ray tube, 7...Bobbin head opening end circumference, 8... ...Engagement protrusion, 11...
...Slit, 12...Elastic piece, 13...
...L-shaped groove.

Claims (2)

[Scope of utility model registration request] (1) A plurality of engaging protrusions are provided on the circumferential edge of the head opening end of the bobbin and extend toward the surface of the cathode ray tube at predetermined intervals, and the engaging protrusions are fitted to the circumferential part of the bobbin and the engaging protrusions. 1. A deflection yoke device characterized in that an elastic piece having a matching L-shaped groove and having one end abutted against the surface of a cathode ray tube is attached and fixed to the engagement protrusion. (2) The deflection yoke device according to claim 1, which is a registered utility model, characterized in that a slit is provided in the tube axis direction on the circumference of the open end of the head of the bobbin, sandwiching the locking protrusion.