JPH0146981B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for winding a deflection coil used in a deflection yoke mounted on a cathode ray tube of a television receiver.

In general, there are two methods for winding the deflection coil used in a deflection yoke in a hollow shape around the core. Using an annular or semi-annular winding frame having a plurality of coil insertion grooves at the rear end, the deflection coil is inserted and locked into the coil insertion grooves and wound directly inside the winding frame in a section-like shape. There is a known method to do this.

Among these methods, in the method of winding using a winding mold, the winding distribution (shape) of the deflection coil is limited to the shape of the mold, and the coil distribution can be arbitrarily selected to obtain the desired deflection magnetic field. Furthermore, when the number of turns is small, such as in a section shape, the coil's hollow-shaped shape cannot be maintained, and a large amount of conductor wire is required to form the hollow shape, resulting in increased costs. It had the following characteristics.

On the other hand, in the method of directly winding the wire on the inner surface of the winding frame using a winding frame, the winding frame and the deflection coil cannot be separated, which results in a larger shape and the structure of the deflection yoke. , the coil length of the deflection coil must be shortened by the thickness of the edge of the coil insertion groove located at the front and rear ends of the winding frame, resulting in a decrease in the sensitivity of the deflection yoke. Due to the frame, it is extremely difficult to move and adjust the position of the deflection coil in the tube axis direction, and it has disadvantages such as the inability to obtain the best comperience characteristics.

The present invention relates to a method for winding a deflection coil, which has been made in view of the above-mentioned matters, and in particular, after winding the deflection coil in a section-shaped saddle shape on the inner surface of a winding frame, the deflection coil is removed from the inner surface of the winding frame. The present invention relates to a method for winding a deflection coil.

An embodiment of the method for winding a deflection coil according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows the winding state of a deflection coil according to an embodiment of the present invention, in which 1 is a semicircular winding frame made of an insulating material, and includes a semi-boss-shaped main body 2, a front end 2a of the main body 2, and It consists of winding guide parts 3 and 4 provided at the rear end 2b. The guide portions 3 and 4 of the winding frame 1 include a collar piece 5 formed from each edge of the main body 2 in a direction substantially perpendicular to the main body 2, and a collar piece 5 formed from each edge of the main body 2 in the tube axis direction and continuously from each edge of the main body 2. It is made up of a plurality of locking pieces 6 that are approximately L-shaped and extend in the radial direction, and have a generally U-shaped cross section, and a conductive wire insertion groove 7 is formed between each locking piece 6 . Reference numeral 8 denotes a deflection coil, into which one or several conductors 8a are inserted and locked into the conductor insertion grooves 7 of the guide parts 3 and 4, and the conductor wires 8a are fitted and locked by the flange pieces 5 and locking pieces 6 of the guide parts 3 and 4. The crossover wire 8b is placed in the recess S formed by
By passing the wire across the wire, the wire is wound in a cross-section shape on the inner surface of the winding frame 1.

Next, electricity is applied to the deflection coil 8 wound in the shape of a section on the inner surface of the semi-annular winding frame 1 to generate heat, and the surface film of the conductor wire 8a is melted by the heat, so that the conductor wires 8a are connected to each other. Then, the deflection coil 8 (conductor wire 8a) is formed into a hollow shape.
At this time, the conductive wires 8a may be fixed to each other with an adhesive while being careful not to adhere to the winding frame 1, and the fixing means may be arbitrary. When the deflection coil 8 is fixedly molded into a hollow shape,
The locking piece 6 located on the inner surface of the guide portions 3 and 4 of the winding frame 1 is removed from the winding frame 1 as shown in FIGS. 2A and 2B. Here, as the winding frame 1,
If the main body 2 and the flange piece 5 are integrally molded, and the locking piece 6 is formed separately from the main body 2, the locking piece 6 can be removed even after the locking piece 6 located on the inner surface is removed. The main body 2 (flange piece 5) can be reused by simply replacing and attaching the part 6.

With the locking pieces 6 of the guide portions 3 and 4 of the semi-annular winding frame 1 removed, the deflection coil 8 is removed from the inner surface of the winding frame 1, and as shown in FIG. A deflection coil 8 is obtained which is wound in a saddle shape in a section shape in which a wire 8b is formed.

FIG. 4 shows a state in which a deflection coil obtained by the winding method of the present invention is applied to a vertical deflection coil of a deflection yoke. In FIG. 4, 10 is a core, and on the inner surface of the core 10, a vertical deflection coil 8 which is wound in a section shape in a saddle shape by the winding method of the present invention is directly attached, and further, a bobbin is attached. 1
A horizontal deflection coil 12 is separated from the vertical deflection coil 8 by 1 and wound in a saddle shape using a winding die.
is attached to constitute the deflection yoke 13.

In one embodiment of the present invention, a semi-annular winding frame for winding a deflection coil is constructed of an insulating material. However, the main body of the winding frame is a semi-annular core, A semicircular winding frame may be constructed by attaching a winding guide portion having a substantially U-shaped cross section to the front and rear end openings of the The structure, material, etc. of the winding frame are not limited to those in the embodiments, as long as they can be removed. Furthermore, it goes without saying that the deflection coil wound by the winding method of the present invention may be applied to the horizontal deflection coil of the deflection yoke.

As described above, according to the deflection coil winding method of the present invention, the conductor is attached to the inner surface of the semi-annular winding frame which is provided with the winding guide portion in which a plurality of conductor insertion grooves are formed at the front end and the rear end. A step of winding the deflection coil in a section shape in a saddle shape through the insertion groove, a step of fixing the conductors of the deflection coil wound in the saddle shape to each other, and a step of at least the winding guide portion of the semicircular winding frame. The deflection coil is wound by a process of removing the inner surface part and a process of removing the deflection coil wound in a hollow shape from the inner surface of the semicircular winding frame, and the winding frame and the deflection coil are separated. In addition to being able to easily take out only the deflection coil by separating it, making it smaller in size, when used as a deflection coil in a deflection yoke, the coil length of the deflection coil can be reduced without being separated from the winding frame. Compared to , it can be set longer by the thickness of the locking piece that makes up the winding guide part of the winding frame.
The sensitivity of the deflection yoke is correspondingly improved, and since there is no winding frame, the position of the deflection coil in the tube axis direction can be adjusted extremely easily, making it possible to obtain the best convergence characteristics. It is something that occurs.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a deflection coil wound in a hollow shape around a semicircular winding frame in an embodiment of the deflection coil winding method of the present invention, and Fig. 2 is a perspective view of the winding of the semicircular winding frame. The inner surface of the guide part is removed, and FIG. 3A is a perspective view, FIG. B is a cross-sectional side view, FIG. The figure is a partially sectional side view of an embodiment in which a deflection coil wound by the deflection coil winding method of the present invention is applied to a deflection yoke. 1...Semi-annular winding frame, 2...Main body, 3, 4...
Winding guide portion, 7...Conductor insertion groove, 8...Deflection coil, 8a...Deflection coil conductor.

Claims (1)

[Claims] 1. A deflection coil is wound in a section shape in a hollow shape on the inner surface of a semi-annular winding frame, which is provided with a winding guide portion in which a plurality of conductor insertion grooves are formed at the front and rear ends thereof, through the conductor insertion grooves. a step of fixing the conductors of the deflection coil wound in the saddle shape to each other; a step of removing at least an inner surface portion of the winding guide portion of the semi-annular winding frame; and a step of winding the deflection coil in the saddle shape. 1. A method for winding a deflection coil, comprising the step of removing the deflection coil thus formed from the inner surface of the semi-annular winding frame.