JPS5923436A - Saddle type deflection coil device - Google Patents

Abstract

PURPOSE:To stabilize the characteristics of the captioned saddle type deflection coil device, make it compact, and excellently mount it on a coil separator by providing slits in the fragment section of a deflection coil body and three-dimensionally treating and fitting them on the curved surface of the separator. CONSTITUTION:A deflection coil body forms a continued loop in a plane configuration with fragment sections 11 and 12, slits 13 and 14 provided in the said sections, large circular section 18 opposed to a large diameter side bent section, and a small circular section 19 opposed to a small diameter side bent section. Said fragment sections 11 and 12 are sealed on the curved section of a coil separator 20. The large diameter section 18 that is connected to each one end of the fragment sections 11 and 12 is sealed along the surface of revolution of the flange section 24 of the separator 20 in a folded configuration and the small circular section 19 connected to each other end of the fragment sections 11 and 12 is also bent and sealed on the bent section 21a of a neck section side in a folded configuration. As a result, the fragment sections can be prevented from floating from a bobbin, securing a good contact thereof.

Description

TECHNICAL FIELD OF THE INVENTION This invention relates to saddle-shaped deflection coil loading used for electron beam deflection of cathode ray tubes.

[Technical background of the invention and its problems]

Conventionally, saddle-type deflection coils have a structure in which the coil is wound in a saddle shape, but this type has the disadvantage that it takes a lot of time to manufacture (To), and that there are large variations in characteristics between products. There is.

[Purpose of the invention]

This invention was made in view of the above-mentioned circumstances, and is easy to manufacture, has stable characteristics, is effective for miniaturization, and has a saddle-type deflection structure that can be attached particularly well to coil separators. The purpose is to provide a coil device.

[Summary of the invention]

In this invention, for example, as shown in FIGS. 2(-), 3(b), and 3, slits 13 and 14 are provided in the fragments of the flexible deflection coil body 1o, so that three slits are formed on the curved surface of the coil separator. This is to deal with it dimensionally and make it fit.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to the drawings. That is, as shown in FIG. 2, in this invention, a flexible deflection coil body 10t in which a coil pattern is formed on a loop-shaped flexible substrate 9 is used, and this is attached to a coil separator 20 as shown in FIG. It is.

Next, referring to FIGS. 1(8) and 1(b), the coil separator mechanism will be explained. First, the coil separator unit 1 is a bobbin having a small diameter rear part 21 and a large diameter part 22 at the front.The small diameter part 21 corresponds to the neck side of the cathode ray tube, and the large diameter part 22 corresponds to the funnel part. It is arranged near the boundary between the funnel part and the neck part.

A flange-shaped vent portion 21B is formed in the rear small diameter portion 21,
Further, a vent portion 22m is also integrally formed in the front thick portion 22.

With respect to the above-described coil separator, the flexible deflection coil body 10 shown in FIG. 2 is set in the following relationship.

② That is, on the developed view of the curved portion 23 (portion indicated by dimension F in FIG. 1), which is obtained by bisecting the coil pattern 1 at the center in the tube axis direction, approximately trapezoidal fragment portions 11 and 12f are made to correspond. Form. (Fig. 2(b)) ■ The fragment portion 11.12 has slits that divide the fragment portion 11.12 into equal parts so that the fragment portion 11.12 coincides with the semicircular curved portion 23 of the coil separator 20 when it comes into surface contact. 13.
13°14.14 is formed to be elongated in the tube axis direction.

■ Align each corner of the fragment parts 11 and 12 above.

bl, cl, d1 point and sol, b2. cl.

d2, and if you draw a circle with radius rl whose circle line coincides with points bl and bl, then this #! - The radius rl is made to match the radius r1 of the large diameter portion of the coil separator. The center is ■
It is 1.

■Next, surface 2 of the vent part 22a of the coil separator ball
The width of 4 is Wl, and the radius (,
r 1+Wx ), and draw a circle between this circle and the fragment part 1.
At the center of the great arc 16 of 1.12, Wl'? Intersection with added arc 17 'ff: f1. Let it be f2.

Fragment part 11.12 point "1*cl extension line, point 1126
The intersection of the extension line of C2 and the arc 17 is el, respectively.
Let it be C2.

■ Next, the line of the small circle 18 of the fragment part 11.12 (cl~dJ
), (cl-d2) by two fathoms is provided, and a line parallel to this line is provided.

And the quadrilateral c 1- d l * hl - g J
and C,2,d2*h2mg2.

(2) Next, draw a circle to position the arc on bl-bl with its center t-02. A circle with a radius r2 drawn around the center 02 is set to match the small diameter of the coil separator 20.

■ Furthermore, centering on center 02, radius (r2+W2)
Draw a circle. Here, W2 is the width of the surface of the pent portion 22m on one side of the neck 5. Then, connect the tangent to the outer circumference of this circle and the point c1.02.

■ The outer i of the flexible substrate formed as above is the point c l −+ e 1−) f l −+ f 2
-+e2→C2→Reed on c1, inner edge is d1→b1→
b2→d2→h2→h l −) d It is on l.

■ Figure 2 (-
), form a coil pattern 3°, and connect terminal 3.
01*302 is provided.

Therefore, the flexible deflection coil body 10 has a segment portion 11
．． 12, slits 13 and 14 provided therein, a large circular arc portion 18 corresponding to the large diameter side vent portion, and a circular arc portion 19 corresponding to the small diameter side vent portion form a planar continuous loop.

Next, the above-described flexible deflection coil body 1θ has a bent portion 3 shown in FIG.
1.31.32.33 are bent and pasted as shown in Figure 3. That is, the fragments 11.12 are pasted onto the curved portions of the coil separator 20. Then, the large circular arc portion 18 continuous to one end side of the fragment portion 14.12 is pasted so as to be folded back along the rotational surface of the 7-rank portion 24 of the coil separator 20. Further, the small circular arc portion 19 continuous to the other end side of the fragment portion 11.12 is also bent and pasted to the neck portion side vent portion 21B.

Fig. 3 shows a coil separator ball divided into two parts in the axial direction, and a fragment part 11.12'f disposed on the bobbin inner wall surface of one of the divided coil separator parts. , where the large arc portion 18 and the small arc portion 19 are:
It is folded back and arranged along the vent part of the other divided part. The flexible deflection coil body 10 is
In this manner, it is attached to the coil separator, and is also attached to the other divided portion of the coil separator in a symmetrical manner to the state shown in FIG. Then, flexible deflection coil bodies are alternately stacked on one and the other divided portion to obtain a predetermined number of filters and used as a deflection device.

〔Effect of the invention〕

According to the deflection coil device described above, in particular the slits xs, i4 are provided in the fragments 11.12 of the flexible deflection coil body.
It is characterized by the fact that it is provided in This slit 13.14
By providing f, it is possible to properly press the fragment portion manufactured in a planar manner against the inner circumferential wall of the coil separator bobbin portion, which forms a curved surface in the axial direction and in the direction intersecting the axis. can. If there were no slits in the temporary fabric, the fragments would not fit on the inner circumferential surface of the bobbin, causing deflection, which would have a major negative effect on the characteristics.However, by providing the slits in this way, the deflection can be absorbed. can do. Therefore, there is no place where the fragment part floats up from the inner circumferential wall surface of the bobbin, and good contact can be achieved.

[Brief explanation of drawings]

1(a) and 1(b) are a plan view and a perspective view of a coil separator, FIGS. 2(a) and 1(b) are explanatory views of a flexible deflection coil body according to the present invention, and FIG. 3 is an illustration of a flexible deflection coil body according to the present invention. It is a perspective view showing one example. 10...Flexible deflection coil body, 11.12...
-Fragment portion, 13.14...Slit, 18...Large arc HL 19...Small arc portion, 20...Coil separator. Applicant's agent Patent attorney Takehiko Suzue9- Figure 10

Claims (1)

[Claims] A coil separator has a cylindrical bobbin with a small rear diameter portion and a large diameter portion at the front, and a flange-like vent portion is integrally formed at both ends in the axial direction. When this coil separator is divided into two in the axial direction, , a pair of flat plate-like fragments are disposed in the axial direction on the inner wall surface of the bobbin portion of one of the divided parts so as to have an interval that increases as the diameter increases, and each end of the fragments on the large-diameter side is disposed in the axial direction. The large circular arc portion that is continuous in a plane is disposed along the vent portion surface on the large diameter side of the coil separator, and is continuous in a planar manner along each end of the small diameter side of the fragment portion. The small circular arc portion also includes a flexible deflection coil body having a league-shaped flexible substrate disposed along the small-diameter side vent portion surface of the coil separator, and a plurality of slits each formed long in the axial direction in the fragment portion. A saddle type deflection coil device having a t-% characteristic.