JPH0350599Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a saddle-shaped deflection coil used in a deflection yoke device, and in particular, the present invention relates to a saddle-shaped deflection coil used in a deflection yoke device.
The present invention relates to a saddle-shaped deflection coil that is continuously wound through a crossover portion.

[Prior art]

In general, a deflection yoke includes a core, a bobbin shaped bobbin provided along the inner surface of the core, a vertical deflection coil wound around the core, and a horizontal deflection coil provided along the inner circumference of the bobbin. coils, each of which is formed as a toroidal or saddle-shaped deflection coil.

In the deflection yoke constructed in this manner, the vertical deflection coil is constructed in a toroidal shape, and the horizontal deflection coil is constructed in a saddle shape. As semi-toroidal deflection yoke devices, those shown in FIGS. 4 to 9 are conventionally known.

In the drawings, reference numeral 1 denotes a saddle-shaped horizontal deflection coil according to the prior art, and the deflection coil 1 is constructed by a pair of bobbins 2, 2 made of an insulating material abutting each other and winding wire 16, which will be described later. be done. Here, the bobbin 2 is approximately semicircular and has a top front end 3.
A, a circumferential body part 3 having a top rear end 3B, and a plurality of ( In the case of the embodiment, there are ribs 4A, 4B, ... 4F (referred to as "ribs 4" as a whole) (six each on both sides), and the front side (cathode ray tube enlarged part side) and rear side (cathode ray tube neck side) of the circumferential body 3. ) are protruded from the outer circumferential surface of each of the outer circumferential surfaces, and step portions 5A, 6A are formed in the middle, and abutting side flanges 5B, 6B and top side flanges 5C, 6C are formed between the stepped portions 5A, 6A.
The collars 5 and 6, which are located at the front and rear in the longitudinal direction of each of the collars 5 and 6, and which project from the top front end 3A and top rear end 3B of the circumferential body portion 3, respectively; The ribs 4 are located on both sides in the circumferential direction with 7 and 8 in between.
L-shaped winding locking claws 9A, 9B, which protrude in the longitudinal direction as extensions of B, 4C, 4D, and 4E, and whose tips are bent in the radial direction at the same end surface positions as the respective flanges 7, 8;
It is roughly composed of 9C, 9D (collectively referred to as "winding locking claws 9"), 10A, 10B, 10C, and 10D (collectively referred to as "winding locking claws 10"). Then, each winding locking claw 9A, 9B and 10
A and 10B are the butt-side flange portions 5 of the flange 5 and 6, respectively.
The winding locking claws 9C, 9D and 10C, 10D project in the longitudinal direction from the top side flanges 5C, 6C, respectively.
Therefore, between the abutting side collar portion 5B extension of the collar 5 and the winding locking claw 9A, between the winding locking claws 9A and 9B, and between 9B and 9C.
There is a gap 11A, 1 between...9D and the top front end 3A.
1B, ... 11E, between the extension of the abutting side flange 6B of the collar 6 and the winding locking claw 10A, between the winding locking claw 10A and 10B, between 10B and 10C, ... 1
There are also gaps 12A, 12B,... between 0D and the top rear end 3B.
...12E (see Figure 6).

13A, 13B, . . . 13E are between the ribs 4A and 4B, between 4B and 4C, . . . as shown in FIG.
A section groove (collectively referred to as "section groove 13") is located between 4E and 4F and formed in the longitudinal direction of the inner circumferential surface of the coil bobbin 2, and a winding wire 16, which will be described later, is wound around the section groove 13. Thus, a deflection section 16A is formed.

Reference numeral 14 denotes a front connecting wire groove formed in the circumferential direction on the outer peripheral surface of the front end side of the coil bobbin 2 by the collar 5 on one side and the collar 7 and the winding locking pawl 9 on the other side. A narrow portion defined by the abutting side flange portion 5B of the flange 5 and the winding locking claws 9A, 9B, and the flange 5
The top side flange 5C and flange 7 and the winding locking claw 9C,
9D and a wide portion defined by 9D. On the other hand, 15 is a rear connecting wire groove formed in the circumferential direction on the outer peripheral surface of the rear end side of the coil bobbin 2 by the collar 6 on one side and the collar 8 and the winding locking pawl 10 on the other side,
Like the front connecting wire groove 14, the connecting wire groove 15 also includes a narrow portion and a wide portion.

Furthermore, 16 is a winding wound across the section groove 13 and each of the connecting wire grooves 14 and 15, and the winding 16 is connected to the deflecting portion 16A located in the section groove 13 on both sides and the front connecting wire groove 14. It consists of a front connecting wire portion 16B located in the rear connecting wire groove 15 and a rear connecting wire portion 16C located in the rear connecting wire groove 15, which collectively form a saddle-shaped horizontal deflection coil. Here, for example, the winding 1 is attached to the bobbin 2 in the state shown in FIG.
6 to form the horizontal deflection coil 1,
Tie the winding 16 on the collar 8, and connect it to the rear connecting wire groove 15 → the gap 12E on the front → the section groove 13E on the front side →
The wire is wound around the section groove 13E a plurality of times according to the path consisting of the front gap 11E→front connecting wire groove 14→the opposite gap 11E→the opposite section groove 13E→the opposite gap 12E. Next, rear side connecting wire groove 15 → front side gap 12D → front side section groove 13D → front side gap 11D → front side connecting wire groove 14 →
Opposite gap 11D → Opposite section groove 13
Wind the wire in the section groove 13D following the path from D to the gap 12D on the opposite side. Thereafter, the saddle-shaped horizontal deflection coil 1 is formed on the coil bobbin 2 by winding the coil bobbin 2 while sequentially moving the section grooves from 13C to 13B to 13A.

In the figure, reference numeral 17 indicates a core made of a magnetic material such as ferrite, which is provided on the outer periphery of the circumferential body 3 of the coil bobbin 2, and reference numerals 18 and 18 indicate a pair of vertical deflection coils formed by toroidally winding the core 17. In combination with the horizontal deflection coil 1, it constitutes a deflection yoke.

[Problem that the invention attempts to solve]

Saddle-shaped horizontal deflection coil 1 configured as above
In this case, when the winding 16 is led out from the section groove 13 toward the front and rear connecting wire grooves 14 and 15, on the contrary, when the winding 16 is led out from each connecting wire groove 14 and 15 toward the section groove 13. When deriving, winding 16
is bent exactly 90 degrees. That is, as a specific example, as shown in FIG. 7, the winding 16 led out from the section groove 13 is bent at 90 degrees at the position of the winding locking pawl 9C, and wound around the front connecting wire groove 14. At this time, in an ideal state, the winding 16 is wound uniformly around the front connecting wire groove 14 as shown in FIG.

However, since tension is acting on the winding 16 in the direction of arrow F in FIG. 8, it is actually wound in the state shown in FIG. 9. As a result, firstly, a large gap G is generated in the front connecting wire groove 14,
There is a drawback that the line area ratio decreases. The same holds true for the rear crossover portion 16C.

Second, winding the wires in the state shown in FIG.
There is a drawback that B and 16C become loose and cause the winding to unravel. That is, the section grooves 13A to 13
In E, the winding 16 is inserted into the section grooves 13E-1
Since it is wound in the order of 3D...13A, there is a gap 11E → 11 for each crossover groove 14, 15.
D...→11A, or 12E→12D...→1
2A, and the portion where the front connecting wire portions 16B and 16C pass, that is, the wide portion of each connecting wire groove 14 and 15, is in the state shown in FIG. 9, which improves the alignment of the windings. It has the disadvantage that it decreases.

Thirdly, since a decrease in the stacking ratio means that the void G increases, thin wires must be used on the premise that the void G will occur. Coils made of thin wires have an increased DC resistance compared to coils made of thick wires, so they have the disadvantage of lowering the L/R ratio and, in turn, deteriorating the performance of the deflection coil.

The present invention was devised in view of the drawbacks of the prior art described above, and includes a saddle-shaped deflection coil that improves the alignment of the windings at least in the front connecting wire groove in a deflection coil in which the deflection section is wound in sections. The purpose is to provide.

[Means for solving problems]

In order to achieve the above object, the present invention provides a morning glory-shaped bobbin by providing a circumferential body portion formed in a semicircular shape and having a top front end and a top rear end, and a plurality of ribs on the inner circumferential surface of the circumferential body portion. , a plurality of section grooves formed between each of the ribs, and a plurality of section grooves that are located on both sides in the circumferential direction, sandwiching the top front end and the top rear end of the circumferential trunk portion, and protrude in the longitudinal direction as an extension of each of the ribs. A winding locking pawl, a collar provided in the circumferential direction on the front and rear outer peripheries of the circumferential trunk, and front and rear flanges formed on the outer circumferential side of the circumferential trunk by the front and rear flanges and the winding locking pawl. one deflection coil can be saddled by winding a winding wire from the section groove to each crossover groove on the bobbin while being locked by each winding locking pawl. In the saddle-shaped deflection coil, at least some of the winding locking claws located on the front side of the circumferential body portion are provided with dividing protrusions, and the dividing protrusions It is characterized in that a part of the front connecting wire groove is divided into a plurality of connecting wire groove parts in the longitudinal direction.

[Effect]

With this configuration, one deflection coil is formed into a saddle shape, so that after the winding is locked from each section groove to the winding locking pawl, the winding is wound while being crossed by the crossover groove. In the process of winding, the windings are guided within the connecting wire grooves formed by dividing the front connecting wire groove, thereby increasing the wire area ratio of the windings and improving alignment.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to FIGS. 1 to 3. Note that the same components as those in the prior art described above are given the same reference numerals, and their explanations will be omitted.

However, 21 is a dividing protrusion provided in the front crossover wire groove 14, and the dividing protrusion 21 is a protrusion 21A, 21B protruding in the radial direction from the longitudinally intermediate portion of the winding locking claws 9C, 9D. and the top front end 3 of the circumferential body portion 3
Consisting of protrusions 21C provided on both sides of A and protrusion 21D provided at the top of the top front end 3A,
Each of these protrusions 21A to 21D is provided in a protruding manner at the same circumferential position as the abutting side flange portion 5B of the flange 5. Therefore,
The wide portion of the front connecting wire groove 14 is defined by the projections 21 into two connecting wire groove portions 22 and 23 in the longitudinal direction, and the connecting wire groove portion 23 is defined by the connecting wire groove 1 described above.
It is a circumferential groove that is continuous in the circumferential direction with the narrow width portion of No. 4.

On the other hand, 24 is a dividing protrusion provided in the rear connecting wire groove 15, and the dividing protrusion 24 is also a part of the winding locking pawl 1.
Protrusions 24A and 24B protruding from the longitudinal intermediate portions of 0C and 10D, protrusions 24C provided on both sides of the top rear end 3B of the circumferential trunk 3, and protrusions 24D provided at the top of the top rear end 3B. Similarly to the dividing projection 21 described above, the inside of the rear connecting wire groove 15 is defined into two connecting wire groove parts 25 and 26.

Thus, for the front crossover wire portion 16B, the gaps 11A, 11 are separated from the section grooves 13A, 13B.
The winding 16 led out through B is connected to the crossover groove 23
is wound along the section grooves 13C, 1.
The winding wire 16 led out from the wires 3D and 13E through the gaps 11C, 11D, and 11E is wound along the connecting wire groove portion 22. As a result, the front connecting wire portion 16B is completely divided by the dividing protrusion 21 and wound as shown in FIG. The situation shown in the figure does not occur, and the line area ratio can be reliably increased. On the other hand, the rear crossover wire section 16C
The line area ratio can also be increased in exactly the same manner.

Since this embodiment is configured as described above, each of the connecting wire grooves 14 and 15 is connected to the connecting wire groove portions 22 and 23 and 25 and 2 by the dividing protrusions 21 and 22, respectively.
6, each crossover section 16B, 16
It is possible to increase the wire area factor of C, and it is also possible to wind the wires in a state in which they are reliably aligned.
Unlike the prior art, the winding does not loosen, unravel, or come off, and the saddle shape can be maintained for a long period of time. Furthermore, since the wire area factor of the crossover portion is improved and aligned winding is performed,
It is possible to improve the L/R ratio, minimize the occurrence of ringing phenomena, etc., and provide a high-definition screen.

In addition, in the embodiment of the present invention, the collars 5 and 6 are provided with one-stage step portions 5A and 6A, so that the dividing protrusions 21 and 2
4 are arranged one by one, and each crossover groove 14,
15 inside the two connecting wire grooves 22, 23, 25, 2
Although the above description assumes that the connecting wire grooves 14 and 15 are each divided into two parts, two or more dividing protrusions may be provided in each of the connecting wire grooves 14 and 15 to divide the wire into three or more parts.

Further, in the embodiment, the dividing protrusions 21 and 24 were described as being composed of the respective protrusions 21A to 21D and 24A to 24D, but it is sufficient if the protrusions are located near the bending part of the winding 16, and in the case of the embodiment, the protrusions 21D ,24
Both D may be omitted.

On the other hand, in the embodiment, both the front connecting wire groove 14 and the rear connecting wire groove 15 are described as being divided.
Front connecting wire groove 14 has a large effect on the deflection magnetic field
Of course, it is also possible to use only one.

Further, in the embodiment, the saddle-shaped deflection coil 1 is applied to a horizontal deflection coil, but it may also be applied to a vertical deflection coil.

[Effect of idea]

The saddle-shaped deflection coil according to the present invention is as described in detail above, and at least some of the winding locking claws located on the front side of the circumferential body are provided with dividing protrusions, and the Since a part of the front connecting wire groove is divided into a plurality of connecting wire groove parts in the longitudinal direction by the connecting protrusion, at least the wire area ratio of the winding in the front connecting wire groove can be increased. This improves the alignment of the windings, improves the L/R ratio, and when a deflection yoke is attached, improves the performance of the deflection yoke.Moreover, the height of the tsuba is reduced by the increased wire area factor. It exhibits many excellent effects, such as being able to reduce the width of the crossover groove.

[Brief explanation of drawings]

Figures 1 to 3 relate to embodiments of the present invention,
Fig. 1 is a half-sectional view showing the overall configuration of a deflection yoke in which the saddle-shaped deflection coil of the present invention is applied as a horizontal deflection coil, Fig. 2 is a partial view of the coil bobbin, and Fig. 3 shows the winding state of the winding. 4 to 9 relate to the prior art, FIG. 4 is a half sectional view showing the overall structure of a conventional deflection yoke, and FIG. 5 is a sectional view in the direction of the − arrow in FIG. Figure 6 is an overall view of the coil bobbin, Figure 7 is an enlarged view of part A in Figure 4 showing the winding situation when the winding is bent from the deflection part to the front crossover part, and Figure 8 shows that the winding is normal. FIG. 7 is a cross-sectional view in the direction of the - arrow in FIG. 7, showing a case in which the winding is wound in the same manner as shown in FIG. 1...Saddle-shaped horizontal deflection coil, 2...Bobbin,
9, 10...Winding locking pawl, 13...Section groove, 14...Front side crossover groove, 15...Rear side crossover groove, 16...Winding, 16A...Deflection part, 16B,
16C...Covering wire portion, 17...Core, 18...Vertical deflection coil, 21, 24...Protrusion for division, 2
2, 23, 25, 26...crossover wire groove portion.

Claims (1)

[Scope of utility model registration request] A morning glory-shaped bobbin is formed in a semicircular shape and has a circumferential body portion having a front end and a rear end, and a plurality of ribs in the longitudinal direction on the inner peripheral surface of the circumferential body portion, so that a plurality of ribs are formed between the ribs. a plurality of section grooves, and a plurality of winding locking pawls located on both sides in the circumferential direction, sandwiching the top front end and the top rear end of the circumferential trunk portion, and protruding in the longitudinal direction as an extension of each of the ribs;
Consisting of flanges provided in the circumferential direction on the front and rear outer peripheries of the circumferential trunk, and front and rear crossover grooves formed on the outer circumferential side of the circumferential trunk by the front and rear flanges and winding locking claws. and a saddle formed by forming one deflection coil into a saddle shape by winding a winding around the bobbin from the section groove to each crossover groove while being locked by each winding locking pawl. In the deflection coil, at least some of the winding locking claws located on the front side of the circumferential trunk portion are provided with dividing protrusions, and the dividing protrusions allow part of the front connecting wire groove to be separated. A saddle-shaped deflection coil characterized by being divided into a plurality of crossover grooves in the longitudinal direction.