JPH01211837A - Deflection yoke - Google Patents

Abstract

PURPOSE:To fixedly assemble a vertical deflection coil without damaging the vertical coil wires by providing a projection on a coil-cover portion facing to about middle point of the bent-up thickness of a horizontal deflection coil, and providing a recess, for holding the coil-cover, on a insulating frame at a position facing to the projection on the coil-cover. CONSTITUTION:After two insulating frames 1a, 1b are combined together, a bent-up portion of a deflection coil is held by bent-up portion holders 3a, 3b with the aid of coil-guide-ribs 4a, 4b. Then, a coil-cover 8 is fitted into collar portions 2a, 2b of insulating frames 1a, 1b from underside. A projection 9 for fitting into the insulating frames is fitted into the recess 6a, 6b for coil cover fitting over the side-plates 5a, 5b, and at the same time ribs 10a, 10b for preventing the rotation of the insulating frames are fitted to ribs 7a, 7b for preventing the rotation of the coil-cover, thus they are brought into the proper position. In this manner, a hook shaped projection protruding from the collar portion of the insulating frame can be eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION In the field of industrial application, the present invention relates to an in-plane yoke on which a cathode ray tube of a television receiver or the like is mounted.

BACKGROUND OF THE INVENTION Generally, a deflection yoke installed in a cathode ray tube requires a saddle-type horizontal coil and a saddle-type or toroidal-type vertical coil. It also has an insulating frame that maintains insulation between the horizontal coil and the vertical coil and is an integral holding structure, and a coil cover that protects the bend-up portion of the horizontal coil from external damage.

The fitting between the insulating frame and the coil cover was as shown in FIGS. 6 and 7. 21a and 21b are insulating frames divided into two, and the coil cover 22 has a protrusion 23 projecting in the shape of a hook at the joint portion of the insulating frames 21a and 21b. , 2t
It was fixed by being fitted into the arcuate brim portions 24a and 24b of b so as to be locked at the joint portion thereof.

Problem to be Solved by the Invention However, this hook-shaped protrusion 23 is not connected to the insulating frame 21a.
, 21b, it becomes an obstacle when assembling the saddle-type or toroidal-type vertical coil flanges onto the upper surfaces of 24a, 24b, worsening the assembling work, and possibly damaging the vertical coils. Contact with electric wires, bumping into them, and damaging the wire sheathing.
This could cause rare occurrences or disconnections.

The present invention solves the above problem; when the coil cover is fitted into the insulating frame, it does not protrude beyond the flange of the insulating frame, so when the vertical coil is installed, the vertical coil wire is not damaged and is securely fixed. The purpose of this invention is to provide a deflection yoke that can be used.

Means for Solving the Problems In order to solve the above problems, the deflection yoke of the present invention has the coil cover and the insulating frame fitted at a position corresponding to approximately the center of the horizontal coil bend-up thickness of the coil cover. The coil cover is held relative to the insulating frame by fitting the provided protrusion into a recess provided in the insulating frame at a position corresponding to the protruding part of the coil cover.

Function: The above configuration eliminates the hook-shaped protrusion that protrudes from the tail of the insulating frame, which is the case in the past, and does not damage the vertical coil wire when installing the vertical coil.
can be incorporated.

Example An embodiment of the present invention will be described below based on the drawings.

FIG. 1 shows an external view of an insulating frame made of plastic or the like in a deflection yoke according to an embodiment of the present invention.
It is a figure just before combining the coil insulation frame which becomes a set. In FIG. 1, la and lb are two insulating frames, each having an arc-shaped collar 2a.

2b and the ribs 4 for coil guide forming coil bend-up holding parts 3a, 3b between the ribs 2a, 2b.
a, 4b are provided, and a coil bend-up holding portion 3a of the side plates 5a, 5b at the joint portion of the insulating frames 1a, lb is provided.
, 3b, a coil cover fitting recess 6a is located at a position corresponding to approximately the center of the coil cover 3b.

6b, and protrusions 7a and 7b for preventing rotation of the coil cover are provided in contact with the recesses 6a and 6b.

FIG. 2 shows an external view when the insulating frames 1a and lb are combined, and the total length of the protrusions 7a and 7b is a distance of a.

Figure 3 covers the coil bend-up holding part of the insulating frame.
FIG. 3 is a perspective view showing a part of the inner surface of a coil cover that protects a horizontal coil. In FIG. 3, the coil cover 8 is a peripheral plate 8a that covers the coil bend holding parts 3a, 3b (FIG. 1).
and a bottom surface 8b that covers the coil guide ribs 4a, 4b (Fig. 1). The coil cover 8 is fitted into the matching recesses 6a and 6b.
an insulating frame fitting convex portion 9 for holding the coil cover against the insulating frames 1a, lb; and coil cover rotation prevention protrusions 7a, 7b.
2a of the coil cover 8.
, rib 1 for preventing rotation of the insulating frame, which prevents rotation relative to 2b.
0a and 10b are provided, and a distance a is ensured between the ribs 10a and 10b, and the total length a of the coil cover rotation prevention protrusions 7a and 7b of the insulating frames 1a and lb shown in FIG.
It corresponds to

The assembly of the deflection coil described above is as follows.

First, as shown in FIG.
The coil bend holding part 3a.

3b, when the coil cover 8 is fitted into the collars 2a, 2b of the insulating frames 1a, lb from below as shown in FIG. At the same time as the coil cover is fitted into the coil cover fitting recesses 6a and 6b, the insulating frame rotation prevention ribs 10a and 10b are fitted over both of the coil cover rotation prevention protrusions 7a and 7b and positioned.

At this time, as shown in FIG. 4, the coil cover 8 does not have a hooked protrusion like the conventional one that protrudes upward from the collars 2a, 2b of the insulating frames 1a, lb.
lb and the coil cover 8 can be reliably fitted,
Moreover, when the pendock portion of the vertical coil 11 is attached to the upper surface of the collar portions 2a and 2b of the insulating frames la and lb as shown in FIG. There's nothing to do. Insulation frame la
, lb. It is also possible to incorporate a bend-up portion of a vertical coil larger than the collar portions 2a, 2b.

Effects of the Invention As described above, according to the present invention, the coil cover does not have the protrusion of the hook protruding from the brim of the insulating frame as in the conventional case, and the saddle type or toroidal type vertical coil is attached to the insulating frame. There is no longer any deterioration in workability when incorporating it into the system. It is also now possible to incorporate saddle-shaped vertical coils that are larger than the brim of the insulating frame.

[Brief explanation of the drawing]

Fig. 1 is an external view of a steel inner yoke insulating frame according to an embodiment of the present invention before combination, Fig. 2 is an external view after combination, and Fig. 3
The figure is a partial perspective view of the inner surface of the coil cover, Figure 4 is an external view when the insulating frame and coil cover are combined, Figure 5 is a partial sectional view of Figure 4 when a saddle type vertical coil is assembled, FIG. 6 is an external view when a conventional insulating frame and coil cover are combined, and FIG. 7 is a partial sectional view of FIG. 6. la, lb...Insulation frame, 2a, 2b...Brim part, 3
a, 3b...Coil bend-up holding part, 4a. 4b...Coil guide rib, 5a, 5b...Side plate, 6a, 6b...Coil cover fitting recess, 7a. 7b... Coil cover rotation prevention protrusion, 8... Coil cover, 9... Insulating frame fitting protrusion, 10a, 10
b... Rib for preventing rotation of the insulating frame, 11... Vertical coil. Agent Yoshihiro Morimoto Figure 1! # 4.4k --- Ko J Luka ° A different figure Fig. 3 Fig. 5

Claims (1)

[Claims] 1. An insulating frame for holding a saddle-shaped horizontal coil and a saddle-shaped or toroidal-shaped vertical coil to maintain insulation, and a role of protecting the bend-up part of the saddle-shaped horizontal coil. a deflection yoke provided with a coil cover having a coil cover, wherein a convex portion protruding toward the bend-up portion of the horizontal coil is provided in a coil cover portion corresponding to a substantially central portion in the bend-up thickness direction of the horizontal coil; a deflection yoke provided with a concave portion that fits into the convex portion and holds the coil cover at a position corresponding to the convex portion of the coil cover.