DE2321193A1 - RINGJOCH - Google Patents

Description

PATENT LAWYERS OQ O 1 1

DR. CLAUS REtNLANDER * ^ό * ■ ■ '

DIPL-ING. KLAUS BERNHARDT

D - 8 MONKS 60
THEODOR-STORM-STRASSE 18a

GTE Sylvania Incorporated ^ ¥ ilmington ₉ Delaware »USA

Ring ^ och

Priority: May 1, 1972 - USA - Serial No. 249 390

A ring yoke with a novel core is described which is provided with protruding deflection elements, with the help of which the individual and separated from each other Coils of the yoke can be wound as a single coil so that the winding machine can be used during manufacture the winding no longer needs to be stopped periodically «The only coil is then through Cutting the wire in the right places into a multitude of individual coils *

Background of the invention

The invention relates to deflectors for cathode ray tubes and in particular those yokes which are wound in a ring shape. The invention also relates to improvements of the yoke core "which make winding much easier

309850/1093 ". _e / 2

It is known ₉ annular deflection yoke © tubes for cathode ray · produce what © as the core a hollow body with a certain permeability ^ have on which a plurality of coils in the longitudinal direction having thereon a wound wire, "turns d _o h _e in which the coil , each arranged approximately parallel to the longitudinal axis of the core »These yokes generally have four 'individual, separate coils» namely two for horizontal deflection and two for vertical deflection »However, winding patterns with ten or more coils are also known ο Such yokes are wound semi-automatically on a yoke winding machine ₉ which basically has a winding head with a closed circular guide track that contains a wire roll. The yoke is arranged in such a way that the circular guide track is approximately in the center of the core in a vertical plane around the circular foot around the track while the yoke is rotated in a horizontal plane according to a specific wiring or winding pattern cut end mounted so that it is not lost (generally by securing with tape on the core), the core in the correct position further on for the next winding, and the machine again in gear sets ₀ As mentioned above, this process must for each of the coils are repeated and this results in a time-consuming operation, which greatly increases the cost of the yoke.

Objects and Summary of the Invention

The aim of the invention is to avoid the above-mentioned disadvantages of the known devices and the winding

3098 50/1093.

of ring yokes to facilitate. It is also the goal of Invention to reduce the winding costs and to increase the winding speed for such yokes »

These objects of the invention are achieved according to the invention dadureh that a yoke core or is "Special Shapes having at least two protruding deflection elements are provided which are arranged at certain points that the yoke can be wound as a single coil _$ which later by properly cutting of the wire can be divided into the required number of individual and separate coils. "

Two embodiments of the invention are shown in FIG Drawing shown and are described in more detail below. Show it:

Figure 1 _e is a perspective view of an execution? form of invention;

Fig. 2 is a perspective view of a further embodiment of the invention? and

3 shows the application in perspective the invention.

For a better understanding of the present invention and of further objects, advantages and possibilities the same is referred to the following description and the claims in connection with the above Drawings referenced «

1 shows a single yoke core 10. one material with a permeability, for example ferrites, the yoke core 10,

309850/1093

which can be wound with a large number of individual and separate coils, consists of a frustoconical ring or hollow body 12 with a top 14, a bottom 16 and a inclined or angled wall 18 ″ The wall 18 is provided with at least two deflection elements 20, which arranged offset from one another at certain points are »The deflecting elements 20 are preferably made of a non-magnetic material and they can be attached to the wall 18 by any suitable method, for example by gluing. The illustrated Deflection elements essentially have the shape of a triangular pyramid »but other shapes can also be used, for example a cylindrical shape, can be used * It is important, however, that the deflectors do not have any have sharp edges in contact with the wire spool ^ which could scrape off the insulation from it «

Fig. 2 shows another embodiment of the invention, a plastic housing 22 is provided which The housing 22 fitted over the body 12 of the core 10 is adapted in shape to the body 12 and made in two parts, an upper part 24 and one lower part 26. Upper part 24 has a rim 28 and an angled wall 30 which extends over wall 18 of the body 12 fits. The lower part 26 is also provided with a rim 32 which extends over the underside of the body 12 fits. The two parts 24 and 26 are glued together with a suitable plastic adhesive. In this embodiment of the invention, the deflecting elements 20 protrude from the wall 30. These deflection elements can be glued into matching slots as separate parts or as one joint Part of the overall arrangement through molding, pressing

309850/1093 _{/ n}

or the like.

Fig. 3 shows a schematic representation of the application of the invention during the winding of the yoke * The arrow shows the direction of rotation of the yoke core 10 for purposes of illustration. It is clear that the rotation is not based on this Direction is limited.

After a first coil has begun to be wound, as illustrated by wires 34, the winding process commences continued until the required number of turns for the first coil is available. At this Place it would be required in the well-known winding process that the operator stops the machine, the Cut the wire, switch the yoke core to the position of the next coil and then again begins the winding process · By using the present invention, the end of the first spool is reached a deflection point 20a is present and, when this point is reached, the winding operation is interrupted (which can of course be done by automatic control), while the yoke core 10 to the beginning the next coil is switched on. The wire 34 remains hanging on the point or the deflecting element 20a and wraps itself around the body of the core 10 substantially transversely to the normal winding direction If a suitable point is reached, the winding begins again, the wire 34 around a further deflection element 20b, which is provided at the beginning of the second spool.

Although only two deflection points or elements have been described herein, it is clear that so many Items can be used as required.

309850/1093

By using the present invention, winding ring yokes is made much easier by elimination the start and stop processes as well as the cutting and fastening of loose wire ends by the operator, the production is increased and the Reduced costs.

Within the scope of the invention, a person skilled in the art is offered Numerous possibilities for simplification and improvement.

30 98 50/1093

Claims (6)

Claims ^ * U / ring;} och, with a large number of individual wire coils separated from one another, characterized in that a frustoconical body (12) is provided as the core (10), on which at least two deflection elements (20) are spaced apart from one another and in each case are attached protruding away from the body. 2. Yoke according to claim 1, characterized in that the frustoconical body (12) consists of ferrite with high permeability and that the deflecting elements (20) are attached directly to the body. 3. Yoke according to claim 1, characterized in that the deflecting elements (20) are attached to a substantially the same shape as the core (10) having and via the same matching electrically insulating body (22). 4. Yoke according to one of claims 1 to 3 » characterized. that the deflecting elements (20) are offset from one another both in the direction of the longitudinal axis of the core (10) and radially to the same. 5. Yoke according to one of claims 1 to 4, characterized. that the deflecting elements (20) consist of a non-magnetic material. 6. Yoke according to one of .Ansprüche 1 to 5 »in particular for a cathode ray tube, characterized by a winding forming the wire coils from a single strand of wire (34) which is ring-shaped around the 309850/1093 ... / A2 Body (12; 22) is wound while at least once touches a first deflecting element (20a) and from there the body to a second deflecting element (20b) crossed radially " 309850/1093