JPH0737229Y2 - Deflection yoke device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a deflection yoke device mounted on a picture tube such as a television receiver and a display device.

[Conventional technology]

4 to 6 show a deflection yoke device according to the prior art.

In the figure, reference numeral 1 denotes a deflection yoke device according to a conventional technique, which is formed by expanding a resin material in a bosh shape and has a coil bobbin 2 having a front end enlarged portion 2A and a rear end enlarged portion 2B. A core 3 provided on the outer peripheral side of the coil bobbin 2, a pair of saddle-shaped horizontal deflection coils 4, 4 provided on the inner peripheral side of the coil bobbin 2, and a pair of toroidal coils wound on the core 3. The vertical deflection coils 5 and 5 of the vertical deflection coils 5 and 5 are generally provided, and the rear end enlarged portion 2B of the coil bobbin 2 is provided with a substrate 7 for connecting a sub-coil 6 for preventing ringing of the vertical deflection coils 5 and 5. The deflection yoke device 1 configured as described above is attached to the neck portion 8A of the picture tube 8.

Here, the sub-coil 6 has a ring-shaped closed magnetic circuit core 9 and two windings of a hot side winding 10 and a cold side winding 11 on the closed magnetic circuit core 9.
The windings 10 and 11 are formed by winding the windings 10 and 11 together, and the connection points 10A and 11A on one end side of the respective windings 10 and 11 are connected to the vertical deflection coils 5 and 5, and the connection points on the other end side. 10B and 11B are respectively connected to the plus side and the minus side of a vertical deflection circuit (not shown).

The sub-coil 6 for preventing ringing configured as described above
At the time of operation, the vertical deflection current flows in the direction of arrow A in FIG. 6, and the coils on the winding 10 side and the winding 11 side are wound in the directions canceling the magnetic fields of the two, so that each current is the same. In the case of a waveform, no magnetic field is generated in the sub coil 6. However, when ringing occurs in the current in each vertical deflection coil 5, 5, the current waveform becomes different on the winding 10 side, 11 side, and the difference generates a magnetic field and removes the ringing current. Will work in the direction.

[Problems to be solved by the device]

However, in the above-described conventional technique, when the two windings 10 and 11 are wound around the ring-shaped closed magnetic circuit core 9 when the sub-coil 6 is manufactured, the two copper wires are wound together in a toroidal winding. There is a problem that the winding work of the copper wire is very difficult to do.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a deflection yoke device including a sub-coil that facilitates winding of two windings around a core when winding the sub-coil. To do.

[Means for Solving the Problems]

In order to solve the above-mentioned problems, the feature of the means adopted by the deflection yoke device according to the present invention is that the closed magnetic circuit core of the sub-coil for ringing countermeasures is formed by dividing into two core members and is divided. Each of the two core members is formed with a fixing groove, and one of the core members is wound with two windings of the hot side and the cold side together, and then one of the core members and the other is wound. In a state in which the two core members are abutted with each other, a stopper is engaged with a fixing groove formed in each of the two core members to fix the two core members.

[Action]

With the above configuration, the closed magnetic circuit core of the sub-coil is formed by dividing the core into two core members, and when winding the sub-coil, two windings are solenoid-wound in the opening of one core member. Then, one core member around which the winding is wound and the other core member are abutted against each other, and these two core members lock a stopper in a fixing groove formed in each member, Fix it. As a result, the two core members can always form a closed magnetic circuit without coming off.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 3. The same components as those of the conventional technique are designated by the same reference numerals, and the description thereof will be omitted.

1 and 2 show a first embodiment of the present invention.

In the figure, 20 is a closed magnetic circuit core of this embodiment provided in place of the ring-shaped closed magnetic circuit core 9 of the prior art.
Is composed of one core member 21 and the other core member 22, one core member 21 is formed of a magnetic material such as a U-shaped ferrite, leg portions 21A, 21B, and each of the leg portions. It is composed of a support portion 21C connecting the 21A and 21B to each other, and clip fixing grooves 21D and 21E formed near the tips of the leg portions 21A and 21B. Then, the two windings 10 and 11 are formed by winding the solenoid around the supporting portion 21C.
The other core member 22 is a rod-shaped core.
Has clip fixing grooves 22A, 22B formed at both ends in the longitudinal direction. In a state where the core members 21, 22 configured in this way are abutted, the clips 23, 23 as stoppers are fixed by the clip fixing grooves 21D, 21E of the one core member 21 and the clip fixing of the other core member 22. The core members 21 and 22 are fixed by engaging with the grooves 22A and 22B, respectively. As a result, the two core members 21 and 22 form the closed magnetic circuit core 20 without coming off.

Even in the ring coil countermeasure sub-coil of this embodiment formed in this manner, the operation is not different from that of the conventional art.

However, in this embodiment, the closed magnetic circuit core 20 has two core members 2
1, the two windings 10 and 11 are connected to the core member 2 before the core member 22 is abutted, as shown in FIG.
The winding work of the windings 10 and 11 can be easily performed because the winding is wound around the one support portion 21C. Therefore, the work can be simplified, and the core members 21 and 22 have a simple shape, so that the cost can be reduced. Moreover, since the two core members 21 and 22 are firmly fixed by using the clips 23, 23, the core members 21 and 22 do not come off and the closed magnetic circuit core
20 is constituted, and there is an effect such that the state in which the closed magnetic circuit is always formed can be maintained.

A second embodiment of the present invention will be described with reference to FIG.

In the figure, 30 is a closed magnetic circuit core similar to that of the first embodiment, the closed magnetic circuit core 30 is formed of core members 31 and 32, and one core member 31 is the core member 21 of the first embodiment. A magnetic material such as a U-shaped ferrite formed in the same manner as in the legs 31A and 31B.
And a support portion 31C for connecting the leg portions 31A and 31B to each other, and clip fixing grooves 31D and 31E formed near the tips of the leg portions 31A and 31B. Book winding
It is formed by winding 10,11. Further, the other core member 32 is formed similarly to the core member 31 of the present embodiment, the leg portions 32A, 32B, the support portion 32C connecting the leg portions 32A, 32B to each other, the leg portions 32A, It is composed of clip fixing grooves 32D and 32E formed near the tip of 32B.

In the core members 31 and 32 of the same shape configured as described above, the leg portions 31A, 31A and 31B, 32B are abutted against each other to form a clip.
33, 33 with each clip fixing groove 31D, 32D and 31E, 32E
By fixing with, the closed magnetic circuit core 30 can be formed. The ringing countermeasure sub-coil of this embodiment formed in this way also has the same effect as the first embodiment.

However, in this embodiment, since two core members having the same shape are used in the shape as compared with the first embodiment, the cost can be further reduced.

In the present embodiment, the closed magnetic circuit core having a square shape has been described, but any structure may be used as long as it forms a closed magnetic circuit after abutting, and for example, a semicircular core member can be used.

Further, although the core member is fixed by using the clip in the present embodiment, another fixing tool such as a spring or an external fixing tool may be used as long as it is a fixing method capable of forming a closed magnetic circuit.

Further, in the present embodiment, the sub-coil has been described only as a countermeasure against ringing in the vertical deflection circuit, but the sub-coil can also be used in an electrical filter or the like as in the sub-coil.

[Effect of the Invention] As described in detail above, according to the deflection yoke device of the present invention,
Since the closed magnetic circuit core forming the sub-coil for ringing measures is formed by dividing it into two core members, one core member is wound with two windings around the solenoid and the other is Since the closed magnetic circuit core can be manufactured by abutting with the core member, the workability of the winding work can be improved and the cost can be reduced. Further, the two core members are configured to fix the two core members by locking the stoppers in the fixing grooves formed in each of the two core members, so that the two core members are firmly fixed without coming off. The state in which the closed magnetic circuit is always formed can be maintained.

[Brief description of drawings]

1 and 2 relate to a first embodiment of the present invention. FIG. 1 is a configuration diagram of each core member, FIG. 2 is an assembled state diagram of the core member of FIG. 1, and FIG. 3 is a book. The assembled state view of the core member of the second embodiment of the invention, FIGS. 4 to 6 show the prior art, FIG. 4 is a side view of the deflection yoke device, and FIG.
FIG. 6 is an enlarged front view of essential parts of the sub-coil and substrate shown in FIG. 6, and FIG. 6 is a circuit diagram showing a connection state of the sub-coil and the vertical deflection coil. DESCRIPTION OF SYMBOLS 1 ... Deflection yoke device, 2 ... Coil bobbin, 2A ... Front end enlarged part, 2B ... Rear end enlarged part, 4,4 ... Horizontal deflection coil, 5,5 ... Vertical deflection coil, 6 ... Sub coil, 8 ... Picture tube, 8A ... Neck part, 9,20,30 ... Closed magnetic circuit core, 10,11 ... Winding, 21,22,31,32
... Core member.

Claims (1)

[Scope of utility model registration request] 1. A coil bobbin having a front end enlarged portion and a rear end enlarged portion, which is mounted on a neck portion of a picture tube, and a horizontal deflection coil and a vertical deflection coil provided on the coil bobbin in a state of being insulated by the coil bobbin. A coil and a coil disposed on an enlarged rear end portion of the coil bobbin between the vertical deflection circuit and the vertical deflection coil, and two windings of a hot side and a cold side are wound together on a closed magnetic circuit core. In a deflection yoke device including a sub-coil for preventing ringing, the closed magnetic circuit core of the sub-coil is formed by dividing the core into two core members, and the closed core is fixed to the two divided core members. Grooves are formed respectively, and the two windings are wound together on one of the core members, and then, one core member and the other core member are abutted against each other. A deflection yoke device characterized in that a stopper is engaged with a fixing groove formed in each of the core members to fix the two core members.