JP2564725Y2 - Deflection yoke - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a saddle type deflection yoke.

[0002]

2. Description of the Related Art Deflection yokes are roughly classified into a toroidal type and a saddle type depending on the difference in the winding form.
1 shows a saddle-shaped conventional example. In FIG.
Winding bobbin 6 and windings bobbin 1 of the horizontal coil vertical coil
Are symmetrical bobbin pieces 1a, 1b, 6a, 6b, respectively.
And each of the winding bobbins 1 and 6 has a cylindrical shape whose radius gradually increases in the forward direction. A conductive wire is wound around each of the winding bobbins 1 and 6 to form a coil 5 for horizontal deflection and a coil 15 for vertical deflection. vertical
A cylindrical core 13 is provided outside the winding bobbin 6 of the coil , and the core 13 is provided with symmetrical core pieces 13a and 13b.
Are joined.

[0003] Thus assembled configuration by deflection yoke, each bobbin pieces 1a, 1b, 6a, wound a winding 6b, the horizontal by joining bobbin pieces 1a, 1b of the horizontal coil
The winding bobbin 1 of the coil is made. Next, the bobbin piece 6 for the vertical coil is placed so as to cover the outside of the winding bobbin 1 of the horizontal coil .
a, 6b are joined to form a winding bobbin 6 of a vertical coil .
Finally, the core 13 is completed by joining the pair of core pieces 13a and 13b so as to further cover the outside of the winding bobbin 6 of the vertical coil .

[0004]

However, in the deflection yoke having the above structure, as shown in FIGS. 5 and 6, a vertical coil is wound between the core 15 and the coil 15 for vertical deflection (outside). It increased forced to the inner diameter R ₂ of the correspondingly core 13 for the thickness of the line bobbin 6 is interposed. The inner diameter R ₂ increases the deflection efficiency because the magnetic field becomes wider in the core 13 of the core 13 has a drawback that decreases.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a deflection yoke having a saddle shape and having a minimum inner diameter of a core to improve deflection efficiency.

[0006]

In order to achieve the above object, a deflection yoke according to the present invention is constituted by winding coils on a winding bobbin of a horizontal coil and a coil winding bobbin of a vertical coil, respectively. in the deflection yoke having a cylindrical core on the outside position of the vertical coils, front and rear ends of the core
The bobbin positioning groove is formed in each of the
Multiple winding hooks on each of the front and rear ends of the
The wire hooking projection is provided with the bobbin positioning.
The inside corresponding to the female groove is inside of other wire hooking projections
Core positioning parts projecting to the
The positioning part and the bobbin positioning groove are engaged with each other.
Thus, the core is fixed inside the winding bobbin of the vertical coil, the core is fixed to the winding bobbin of the vertical coil, and the inner peripheral surface of the core is brought into contact with the core.
The coil is formed inside the core by winding the winding including the hanging projection .

[0007]

Since the core is disposed in contact with the vertical coil, the inner diameter of the core can be minimized.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show one embodiment of the present invention. In FIG. 1, a winding bobbin 1 of a horizontal coil is formed by joining left and right symmetric bobbin pieces 1a and 1b, and has a cylindrical shape whose radius gradually increases in the forward direction. Cylindrical part 2
A large number of hooking projections 3 are respectively provided at predetermined intervals at the front and rear ends, and a winding housing groove 4 is formed on the outer periphery of each front and rear end side. Using the hooking projections 3 and the winding accommodating grooves 4 at the front and rear ends, a conducting wire is wound to form a coil 5 for horizontal deflection.

[0009] winding bobbin 6 in the vertical coil is arranged this with substantially the same shape as the winding bobbin 1 of the horizontal coil so as to cover from outside. Winding bobbin 6 is symmetrical in the same manner as the winding bobbin 1 of the horizontal coil <br/> bobbin pieces 6a of the vertical coil, 6b
Although but formed by bonding, the bobbin pieces 6a for vertical coils, 6
b is arranged in a state where the joint surface is rotated by 90 ° with respect to the horizontal coil bobbin pieces 1a and 1b.

The bobbin pieces 6a and 6b for the vertical coil are
Like the bobbin pieces 1a and 1b for the horizontal coil , it comprises a cylindrical portion 7 and a large number of hooking projections 8 and winding accommodating grooves 9 provided at the front and rear ends of the cylindrical portion 7, respectively. Horizontal
Unlike the coil bobbin pieces 1a and 1b, a concave portion 11 for a fastener 10 is formed in the cylindrical portion 7 thereof. Further, a part of the hooking projections 8 at the front end and all the hooking projections 8 at the rear end extend toward the center from the inner peripheral surface, and other hooking projections 8a at the center of the front and rear ends have other hooking projections 8a. Positioning portions 12 projecting inward in the axial direction from the hooking projections 8 are provided.

The core 13 has a cylindrical shape whose radius gradually increases toward the front.
a and 13b are joined. Each core piece 13a, 13b
Are disposed inside the bobbin pieces 6a and 6b for the vertical coil . Positioning grooves 14 are formed at the front and rear ends of the core pieces 13a and 13b, and the positioning portions 12 of the bobbin pieces 6a and 6b for the vertical coil are inserted into the positioning grooves 14.

A lead wire is wound around the winding bobbin 6 of the vertical coil having the core 13 mounted thereon using the hooking projection 8 and the winding accommodating groove 9 to constitute a coil 15 for vertical deflection. Reference numeral 15 is arranged in contact with the inner peripheral surface of the core 13.

The deflection yoke constructed as described above is assembled by winding windings around a pair of bobbin pieces 1a and 1b for a horizontal coil and joining the pair of bobbin pieces 1a and 1b.
The winding bobbin 1 of the horizontal coil is made. On the other hand, inside each of the pair of bobbin pieces 6a and 6b for the vertical coil , each core piece 13a,
13b, and windings are wound around the respective bobbin pieces 6a, 6b to which the core pieces 13a, 13b are mounted. The pair of bobbin pieces 6a and 6b around which the windings are wound are joined together so as to cover the outside of the winding bobbin piece 1 of the horizontal coil to form the winding bobbin 6 of the direct- coupling coil . Bobbin pieces 6a, 6b
Is fixed by the fastener 10.

As shown in FIGS. 2 and 3, the deflection yoke assembled as described above has a coil 15 for vertical deflection (outside).
The core 13 is disposed so as to contact the coil 5 for horizontal deflection (inside) and the coil 5 for vertical deflection (outside).
Constructed most small inner diameter _{R 1} with respect to the coil 15. Therefore, the magnetic field formed in the core 13 becomes narrow, and the deflection efficiency is very good.

[0015]

[Effects of the Invention] As described above, according to the present invention, the vertical
A core is arranged inside the winding bobbin of the coil, and a wire is wound around the winding bobbin where the core is arranged to form a coil,
Since the coil is brought into contact with the inner peripheral surface of the core, the inner diameter of the core is reduced to a minimum, so that there is an effect that the deflection efficiency is improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a deflection yoke (embodiment).

FIG. 2 is a sectional view taken along line AA of FIG. 1 (example).

FIG. 3 is a sectional view taken along line BB of FIG. 1 (example).

FIG. 4 is an exploded perspective view of a deflection yoke (conventional example).

FIG. 5 is a sectional view taken along line CC of FIG. 4 (conventional example).

FIG. 6 is a sectional view taken along line DD of FIG. 4 (conventional example).

[Explanation of symbols]

Reference numeral 1 denotes a winding bobbin of a horizontal coil ; 6 denotes a winding bobbin of a vertical coil ;

Claims (1)

(57) [Scope of request for utility model registration] [Claim 1] constitute a coil respectively wound winding bobbins and each wire in the vertical coil winding bobbin of the horizontal coil, the deflection yoke having a cylindrical core on the outside position of the vertical coils, wherein Forming bobbin positioning grooves at each of the front and rear ends of the core
A plurality of vertical coil winding bobbins are provided at each of the front and rear ends.
A lead hook is provided, and the lead hook
Other conductor hooks are available for the bobbin positioning groove.
Core positioning parts that project inward from the
The core positioning part and the bobbin positioning groove, respectively.
By engaging, the core is fixed inside the winding bobbin of the vertical coil, and the core is brought into contact with the inner peripheral surface of the core on the winding bobbin of the fixed vertical coil ,
The deflection yoke, wherein the coil is formed inside the core by winding the winding including the lead hook .