JPS5928601Y2 - toroidal deflection yoke - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a toroidal deflection yoke used in a television receiver.

Generally, the deflection yoke of a television receiver consists of a saddle-shaped coil, and the so-called saddle type has two divided cores that cover the outer circumference of the coil.

A deflection yoke is used.

However, in the saddle type, the shape of the so-called pend-up part where the coil turns at both ends in the tube axis direction is large, resulting in a large diameter as a whole, and the space volume of the deflection yoke is extremely large, resulting in poor space utilization. There was a problem.

Therefore, so-called semi-toroidal deflection yokes, in which only the vertical coil is configured as a toroidal coil in a small size, have come to be widely used.

By the way, if not only the vertical coil but also all the horizontal coils are toroidally wound coils, there will be no pend-up and a smaller diameter configuration can be achieved, resulting in weight reduction.

However, although some yokes with this configuration have been put into practical use, the drawback of this yoke is that the core is not divided, so the time and effort required to wind the coil around an endless core is required for saddle type and semi-type yokes. It had the disadvantage that it required significantly more than any of the toroidal types.

Although the all-toroidal deflection yoke has various features as described above, the problem of the complexity of the coil winding means has been one of the major factors preventing its practical use.

Therefore, in this invention, the core of this all-toroidal deflection yoke is not the conventional endless one, but is divided into two parts and wound around each part and combined, thereby reducing the labor required for winding and This is an attempt to solve the problems of.

In a complete toroidal deflection yoke, if one tries to divide the cores, the divided cores must be joined together to form a complete deflection yoke.

However, in the all-toroidal deflection yoke, since the deflection coil is wound around the entire circumference of the core, it is impossible in terms of space to connect the cores as they are.

Therefore, an object of the present invention is to provide a device that can easily connect the cores even when the cores of a total toroidal deflection yoke are divided.

The figure shows an all-toroidal deflection yoke according to one embodiment of the present invention.

In this embodiment, two cores 1 each having a substantially semi-cylindrical shape are used.

To make a full toroidal deflection yoke, coils 2 are wound around the outer peripheries of two cores 1, and then the two cores 1 are joined together.

However, in the winding state of the coil 2 near the divided part 4 of the core 1, there is generally no space on the outer circumferential surface near the divided part 4, and there is no place to install a tightening part such as a core band. Therefore, it is impossible to connect the two divided cores 1 using core tightening parts.

Therefore, in the present invention, in order to have the simplest structure that enables the use of core tightening parts, approximately semispherical protrusions 6 are provided near the divided portions 4 of the core 1, as shown in the figure.
, and when the wire of the coil 2 to be wound on the outer surface of the core 1 is wound around the protrusion 6, it will slide down along the outer surface of the protrusion 6, forming a dogleg shape as shown in 3. The core is wound so as to have a detour portion, and a space is formed by sandwiching the divided portion 4 between the outer side surfaces of the divided portion 4 of the core.

If the protrusion 6 of the space formed in this way is used, the core tightening part 5 can be attached so as to span both cores 1 at the protrusion 6, and the split cores 1 can be connected to each other by the core tightening part 5. can be easily realized.

After the cores 1 are combined, a deflection yoke is formed by connecting the winding start and end of the coil 2 of each divided core 1 and providing a deflection current supply terminal.

At this time, the portion 3 of the coil on the outer surface that has been detoured away from the dividing surface 4 becomes concentrated at point A, but this change in the winding state is due to the influence on the deflection magnetic field. Only the coil portion 3 on the outer surface of the core 1 is not affected, and the coil 2 on the inner surface of the core 1 is wound regularly along the generatrix, so that there is no adverse effect on the deflection characteristics.

As described above, according to the toroidal deflection yoke of the present invention, since a split core can be used, the winding work is significantly easier, mass production can be planned, and it is significantly advantageous in terms of cost. The industrial value is great.

[Brief explanation of drawings]

The figure is a perspective view showing an embodiment of the toroidal deflection yoke of the present invention. 1... Core, 2... Coil, 3...
. . . Detoured portion of the coil, 4 . . . Divided surface, 5 . . . Core tightening portion, 6 .

Claims (1)

[Scope of utility model registration request] Two roughly semi-cylindrical cores are provided as cores around which vertical and horizontal deflection coils are wound, and the vertical and horizontal deflection coils are wound around the entire circumference inside each of the two divided cores. At the same time, a hemispherical protrusion is provided only on the outside of the core near the split portion of each core, and this protrusion allows the wire of the coil outside the core near the split portion to be connected to the split portion. A toroidal deflection yoke in which the two cores are integrated by making a detour in a dogleg shape so as to separate them from each other, and attaching a core tightening part to the protrusion.