JPS63281332A - Winding method for deflecting coil - Google Patents

Abstract

PURPOSE:To easily adjust the coil distribution by providing notch sections at part of ribs, forming holes penetrating a bobbin at these portions, and protruding guides to the inside of the bobbin through these holes. CONSTITUTION:Many ribs 12 are provided inside a deflecting coil bobbin, multiple slits 13 are formed from the front end section of the bobbin 11 to the rear end section direction via these ribs 12, a conducting wire 3 is wound in the slits 13 to form a coil in a saddle shape. A notch section 1 is provided at part of the rib 12, a hole 2 penetrating the bobbin is formed at this portion, a guide 4 is protruded to the inside of the bobbin from this hole 2, and the coil distribution is adjusted with the guide 4. If the guide 4 is protruded through a through hole at the time of winding, a deflecting coil with the adjusted winding distribution is obtained, the guide is inserted into the through hole and moved to adjust the arrangement of the conducting wire after the winding. A high-precision coil is thereby obtained easily.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a method for winding a deflection coil constituting a deflection yoke for deflecting an electron beam of a cathode ray tube. The magnetic field is placed at the center of the electron beam and forms a magnetic field for deflecting the electron beam.

FIG. 5 is a side view of a conventional deflection yoke in which a horizontal deflection coil is wound around a deflection coil bobbin. The coil bobbin 11 is formed into a trumpet-shaped hollow so as to be placed in the neck portion of the cathode ray tube. Bobbin 11
A rib 12 is provided on the inner surface of the bobbin 1.
A slit 13 is formed from the front end of the bobbin 11 toward the rear end, and a front crossover wire portion 14 and a rear crossover wire portion 15 are provided at the peripheral edges of the front end and rear end of the bobbin 11. The front connecting line part 14 consists of a front locking claw 14a and a front collar part 14b, which form a front connecting wire groove 14C. It has a rear crossover groove L5C consisting of a portion 15b. Crossover wire parts 14C, 15
C is for passing the conductor 16, and the front locking pawl 14
a and the rear locking pawl 15a are integrated with the rib 12, and the rib 1
2 extends outward from the bobbin 11. The front collar portion 14b and the rear collar portion 15b are the cylindrical portion 19 of the bobbin 11.
It is bent from the end of the locking claw 1i1.15a and extends outward from the bobbin in parallel with the locking claw 1i1.15a. 17 is a deflection core, 1
8 is a toroidally wound vertical deflection coil.

Describing the method of winding a horizontal deflection coil using the above-mentioned deflection coil bobbin 11, the conductor 16 extends from one slit 16, is bent by the front locking pawl 14a, and is connected to the front of the front connecting wire portion 14. The cable advances through the connecting wire groove 14C and is bent by the front locking claw 14a to be inserted into a predetermined slot 43b on the opposite side. After that, the predetermined slit 1
6 toward the rear end of the bobbin, bends at the rear locking pawl 15a, passes through the rear connecting wire groove 15C of the rear connecting wire portion 15, and is bent at the rear locking pawl 15a to enter the front slit 13. In this way, the wire is wound a predetermined number of times to form a saddle shape.

<Problems to be Solved by the Invention> One of the purposes of the above-mentioned slit winding method is to improve the precision of the coil. However, the method of winding a deflection coil using a deflection coil bobbin with slits requires changing the coil distribution for some reason after winding.
When it was extremely difficult to correct minute variations in conductor distribution that occurred during winding, it was necessary to remake the mold for forming the bobbin, resulting in a large cost loss.

<Means for Solving the Problems> The present invention has been made to solve the above-mentioned drawbacks, and includes providing a large number of ribs on the inner surface of the deflection coil bobbin. In a deflection coil winding method in which a slit is formed and the slit conductor is wound to form a saddle-shaped coil, a notch is provided in a part of the rib and a hole is formed in that part to pass through the bobbin. , a deflection coil winding method characterized in that a guide is made to protrude from the hole to the inner surface of the bobbin, and the distribution of the coil is adjusted by the guide.

<Function> When the guide is protruded from the through hole during winding, the alignment can be adjusted.

<Example> Hereinafter, an example of the method of the present invention will be described in detail using the drawings. Note that the same parts as in FIG. 5 will be described with the same reference numerals.

In FIGS. 1 to 4, 11a is a half-divided deflection coil bobbin, and two halves are combined to form a circular a-shaped bobbin 11.

12 is a rib provided on the inner surface of the bobbin 11a across the front and rear ends, 16 is a slit formed by the rib 12, 1 is a notch provided at a predetermined location of the rib 12, and 2 is the position of the notch portion of the bobbin 11a. This is a through hole provided in the cylindrical portion 19 of. As shown in FIG. 1, the through holes 2 are provided at every other rib on the front end side and the rear end side. However, through hole 2
can be provided arbitrarily according to the need for conducting wire distribution adjustment, and can be provided on the front end side, the rear end side, or on all the ribs 12. Further, as shown in FIG. 2, the width of the through hole 2 extends to the slit 16, for example, to about % of the slit width.

The conducting wire 3 passes through a predetermined slit 13 formed by the adjacent rib 12 from the front connecting wire groove 14C formed by the front locking pawl 14a and the collar portion 14b, and then faces toward the rear connecting wire portion 15 and ends at the rear. It passes through the connecting wire groove 15C, enters the slit 13 on the opposite side, and returns to the connecting wire groove 14C of the front connecting wire portion 14. In this way, the wire is wound in a saddle shape in the same manner as in the conventional technique.

However, the present invention is characterized by the following winding method.

Wire winding method 1> As shown in FIG.
Keep it flush with 2. In this state, a predetermined number of conducting wires are wound within the slit 13 using the method described above. Post-winding cylinder 4 As shown in the figure, the guide 4 is moved in the direction of the arrow to adjust the conductor distribution. The amount of movement of guide 4 is
Determined by the state of conductor distribution. Such adjustment is performed at the same time or separately at the through holes where the conductor distribution needs to be adjusted. Next, in order to prevent the adjusted coil from being deformed, it is fixed to the coil bobbin 11a by applying electricity using an adhesive wire or by using an adhesive or the like. After this, the guide 4 is removed.

Note that the guide may be inserted after the conductive wire is wound around the slit 13.

Wire Winding Method 2> The guide 4 inserted into the through hole 2 is fixed in advance at a predetermined position within the slit 13, for example, at the position shown in FIG. 4, and in this state the conducting wire 6 is wound within the slit. In this winding method, the slit is narrowed in the portion where the guide 4 is located, and the alignment of the conductor wires is improved compared to the above-mentioned method. Fixing of the conducting wire is similar to the method described above.

Wire winding method 3 The guide 4 is inserted into the through hole 2 in the same manner as described above, but the test power source is connected in the middle of the winding and the generated magnetic field is measured. This magnetic field strength is compared with the regular magnetic field strength calculated during needle installation, and using this as a reference value, the conducting wire is moved by the guide and its position is corrected to the regular position. next,
The remaining conductor wire is wound, and the coil is completed through the same steps of measurement, comparison, and correction. Fixing of the coil, etc. are the same as described above. Since this method measures the magnetic field strength, it is possible to obtain a highly accurate coil.

<Effects of the Invention> The method for winding a deflection coil according to the present invention has been described in detail above, and the coil distribution can be easily adjusted when winding a saddle-shaped deflection coil using a deflection coil bobbin. , the degree of freedom in designing the slit-wound deflection coil increases. In addition, the inductance L and resistance hole of the deflection coil can be easily changed, and since it can be used with various cathode ray tubes, it is possible to standardize the bobbin. Furthermore, since the distribution of the coil can be finely adjusted by operating the guide, it has the advantage of increasing the precision of the coil.

[Brief explanation of drawings]

FIG. 1 is a front view of a half-divided deflection coil bobbin used in the winding method of the present invention, FIG. 2 is a sectional view of the main part of FIG. 1, FIGS. 6 and 4 are sectional views of the through hole portion, The figure is a partially sectional side view of a conventional deflection yoke. In the figure, 1 is a notch, 2 is a through hole, 6 is a conducting wire, 4 is a guide, 11 is a bobbin, 12 is a rib, and 16 is a slit.

Claims (1)

[Claims] 1. A deflection coil in which a large number of ribs are provided on the inner surface of the bobbin, the ribs form a plurality of slits from the front end of the bobbin to the rear end, and a conductor is wound within the slits to form a saddle-shaped coil. In a coil winding method, a notch is provided in a part of the rib, a hole is formed in that part to pass through the bobbin, and a guide is protruded from the hole to the inner surface of the bobbin, and the distribution of the coil is adjusted by the guide. A deflection coil winding method characterized by: