JPH0546199Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a deflection yoke used in television receivers and the like.

(b) Conventional technology Conventionally, the semi-toroidal deflection yoke
As shown in FIG.
installed on. In addition, the coil separator is Y
It is a combination of a pair of halves divided along an axis.

The horizontal deflection coil 1 has a connecting wire portion 1.
a along the inner surface of the front enlarged portion 3a formed in the coil separator 3 to have an L-shaped cross section, and so that the side portion 1a of the horizontal deflection coil 1 abuts against the protrusion 3b formed in the curved surface portion of the coil separator 3. It is installed.

Furthermore, in recent years, as CRTs have become larger, it is often necessary to attach a rod-shaped magnet 11 to the outside of the front enlarged portion 3a in order to correct the pink distortion of the screen.

In such a deflection yoke, if the horizontal coil and the rod-shaped magnet are not firmly fixed, performance will deteriorate. In other words, in the case of a horizontal coil, the axis of the upper and lower coils is misaligned due to the weight of the deflection yoke, aging, etc., which adversely affects convergence and deflection efficiency. Moreover, in the case of a rod-shaped magnet, vibration noise may be generated during operation.

Furthermore, a sufficient creepage distance must be ensured between the vertical deflection coil and the horizontal deflection coil to ensure insulation.

Conventionally, to achieve this, a large distance was provided between the vertical and horizontal deflection coils, the horizontal deflection coil was fixed by applying adhesive to the side part 1b that abuts the separator, and the front enlarged part of the rod-shaped magnet was fixed. The conventional method was to apply adhesive to the inner surface of the magnet storage section 3c to fix it. However, with this method, it takes a considerable amount of time for the adhesive to harden, so the assembly itself must be left for a while after completion, and the assembly itself takes time. In the case of a horizontal deflection coil, the positioning of the coil may be incorrect depending on the method of applying adhesive. In addition, in the case of horizontal deflection coils,
There is also a method of providing an opening on the rear surface of the enlarged front part of the coil separator, injecting hot melt resin, etc. through the opening, and positioning and fixing the coil transition part using a plate-shaped elastic piece, as in Japanese Patent No. 152346, but in this case, Regarding the type of deflection yoke with rod-shaped magnets, the magnets must be individually fixed with adhesive, which causes deterioration in workability.
In the figure, 5 is a ferrite core, 6 is a tightening band, 7 is a cathode ray tube, and 8 is a fixing wedge.

(c) Problems to be Solved The present invention is to mount a horizontal deflection coil and a rod-shaped magnet to a coil separator simultaneously and firmly with good workability without reducing the insulation between the horizontal and vertical deflection coils. With the goal.

(d) Means for Solving the Problems The present invention comprises: a plate-like elastic piece projecting inwardly from the side surface of the front enlarged portion; a first protrusion projecting outwardly from the side surface and housing the rod-like magnet; An opening is provided between an L-shaped second protrusion protruding from the rear surface of the front enlarged portion and the rod-shaped magnet and the L-shaped second protrusion, and an adhesive for fixing the horizontal deflection coil is injected through the opening. The magnet is fixed by utilizing the fact that it passes between the rod-shaped magnet and the second protrusion.

(e) Effect By the above-described means, the horizontal coil and the magnet are firmly fixed by one injection of adhesive.

(f) Example An example of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of the deflection yoke of this embodiment, FIG. 2 is a view seen from the rear, FIG. 3 is a perspective view, and FIG. 4 is a sectional view.

In the coil separator 9 in this embodiment, a plate-like elastic piece 9b is formed inwardly near the half-joint part on the side of the front enlarged part 9a. The crossover portion 1a of the horizontal deflection coil 1 is fitted between this plate-shaped elastic piece and the front enlarged portion 9a. Further, on the opposite side of the plate-like elastic piece, a first protrusion 9c projecting outward in an L-shape is formed, and a rod-shaped magnet 11 is accommodated in this first protrusion.

An L-shaped second protrusion 9d is formed on the rear surface of the enlarged front part, and between the side surface of the rod-shaped magnet 11 housed in the first protrusion 9c and the side surface of the second protrusion 9d, An opening 10 is provided for adhesive injection. A horizontal coil fixing adhesive 4 such as hot-melt resin is injected through this opening 10, but since this adhesive 4 impregnates the horizontal coil crossover portion 1a and simultaneously fills the opening 10, the magnet is not attached to the coil separator. Can be firmly fixed.

According to this embodiment, the horizontal deflection coil and the rod-shaped magnet can be bonded simultaneously by injecting the adhesive from the same direction (Y direction) as when bonding the vertical deflection coil, and the first
Work efficiency is significantly improved because the work of applying adhesive to the inner surface of the protrusion can be omitted.

(g) Effects of the invention As described above, according to the invention, the horizontal coil and the rod-shaped magnet can be firmly fixed without reducing the insulation between the horizontal and vertical deflection coils.

Furthermore, when bonding the horizontal coil and the rod-shaped magnet, the adhesive can be injected from the same direction as when bonding the vertical coil, and the horizontal coil and the rod-shaped magnet can be fixed at the same time, which greatly improves workability.

[Brief explanation of the drawing]

Fig. 1 is a front view of a deflection yoke according to an embodiment of the present invention, Fig. 2 is a perspective view of the same main part, Fig. 3 is a sectional view of the main part, and Figs. They are a front view and a side view. 1... Horizontal deflection coil, 1a... Crossover section, 2
... Vertical deflection coil, 3, 9 ... Coil separator, 9a ... Front enlarged part, 9b ... Plate-like elastic piece,
9c...first protrusion, 9d...second protrusion, 4...adhesive, 10...opening, 11...rod-shaped magnet.

Claims (1)

[Scope of utility model registration request] A funnel-shaped coil separator having an enlarged front portion with an L-shaped cross section; a saddle-shaped horizontal deflection coil attached to the inner surface of the coil separator; and a toroidal-shaped vertical deflection coil attached to the outer surface of the coil separator. , a deflection yoke including a rod-shaped magnet attached to the outside of the front enlarged part, elastically clamps the crossover part of the horizontal deflection coil in cooperation with the rear surface of the front enlarged part, and a plate-like elastic piece protruding inwardly from the side surface of the front enlarged part; a first protrusion protruding outwardly from the side surface of the front enlarged part and accommodating the rod-shaped magnet; and a first protrusion protruding forward from the rear face of the front enlarged part. 2 protrusions are provided,
a deflection yoke, which fixes the rod-shaped magnet and the horizontal deflection coil to the coil separator with an adhesive injected through an opening formed between the rod-shaped magnet and the second projection when the rod-shaped magnet is in a stored state; .