JPH04107815U - flyback transformer - Google Patents

Abstract

(57) [Summary] [Purpose] Installation of trigger lead wires to be wound around the magnetic legs located outside of the low-pressure bobbin of the U-shaped core in flyback transformers used in various television receivers, etc. The purpose is to improve performance and to install easily and reliably. [Structure] By providing a first recess 10, a second recess 11, and a third recess 12 in the core guide portion 9 of the insulating case 6, and fitting the trigger lead wire 8 into these three recesses 10 to 12. , can be held and fixed, improving workability when attaching the trigger lead wire 8 and providing excellent flyback to ensure retention and fixation after attachment.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention can be used in television receivers, displays, monitor televisions, etc. This is related to the flyback transformer.

0002

[Conventional technology]

In recent years, flyback transformers have been used only to supply high voltage to television receivers. Instead, it also plays the role of supplying power for various voltages, and the trigger pin of switching power supplies It is also used as a transformer for ruse generation.

0003 A conventional flyback transformer will be explained below. Figure 3 shows a conventional flyer 3 shows a perspective view after the trigger lead wire 3 is attached to the lock transformer. figure 3, 1 is a trigger lead wire. 2 is a U-shaped core. 3 is spuri It is ng. 4 is a cable tie. 5 is the main body of the flyback transformer.

0004 The flyback transformer configured as above will be explained. First, hula Incorporate the U-shaped core 2 into the Ivac transformer body 5 and insert it from above and below to create a spring. 3, and connect the trigger lead wire 1 to the U-shaped core 2 and the flyback transformer main wire. Pass the trigger lead wire 1 through the gap in the body 5 and make a loop around the U-shaped core 2. The root part of the rigger lead wire 1 was to be fixed with a cable tie 4.

[0005]

[Problem that the idea aims to solve]

However, in the above conventional configuration, the flyback transformer main body 5 has a U-shaped socket. After attaching A2, connect the trigger with cable tie 4 to attach trigger lead wire 1. -When fixing the lead wire 1, the flyback transformer main body 5 cannot be fixed, resulting in poor workability. Unfortunately, after securing the trigger lead wire 1 with the cable tie 4, the trigger lead wire 1 has a problem in that it moves vertically along the U-shaped core 2. Further When changing the direction of the cable tie 4 of the rigger lead wire 1 to the left or right, first Trigger lead wire 4 must be removed and trigger lead wire 1 must be fixed again. It had some problems.

[0006] This invention solves the above conventional problems and makes it easier to attach the trigger lead wire. The purpose is to provide a flyback transformer that is easy and reliable.

[0007]

[Means to solve the problem]

To achieve this purpose, the flyback transformer of this invention It has a configuration in which three recesses are provided in the trigger guide section to secure the trigger lead wire. Ru.

[0008]

[Effect]

With this configuration, the three recesses provided in the core guide part of the insulation case The trigger lead wire can be held and fixed.

[0009]

【Example】

An embodiment of the present invention will be described below with reference to the drawings. Figure 1 shows the present invention FIG. 2 is a cross-sectional view of a flyback transformer according to an embodiment of the present invention. In Figure 1 6 is fitted with a low voltage bobbin wound with a low voltage winding and a high voltage bobbin wound with a high voltage winding. An insulating case that houses the coil section constructed by combining the above-mentioned low-voltage bobbin 7, and Rigger lead wire, 9 is a core guide part provided on the outer surface of the lower end of the insulating case 6. , 10 is a first recess provided at the upper end of one of the core guide parts 9, and 11 is also a core. A second recess provided at the other upper end of the core guide portion 9; 12 is the root portion of the core guide portion 9; A third recess 13 provided in the upper part of the above-mentioned first, second and third recesses 10, 11, 1 a hook-shaped protrusion provided inside the opening end of 2 to prevent the trigger lead wire 8 from coming off; 4 is a U-shaped core, and 15 is a spring for fixing the U-shaped core 14.

0010 Regarding the flyback transformer configured as described above, its transformer is explained using Fig. 2. The operation of fixing and holding the rigger lead wire 8 will be explained. First, attach the low voltage bolt to the insulation case 6. After fitting the pin 7, connect the trigger lead wire 8 to the core guide part 9 of the insulating case 6. 1 recess 10, second recess 11 and third recess 12, the U-shaped core 1 4 from above and below into the insulating case 6, and the U-shaped core 14 is fixed by the spring 15. Fix it.

[0011] As described above, according to this embodiment, the first recess is formed in the core guide portion 9 of the insulating case 6. 10, by providing three recesses such as the second recess 11 and the third recess 12. The trigger lead wire 8 is inserted into the first recess 10, the second recess 11, and the third recess 12. It can be inserted and held and fixed by the protrusion 13.

0012

[Effect of the idea]

As described above, the present invention provides three recesses in the core guide part of the insulating case. This allows the trigger lead wire to be securely held and fixed, making installation work easier. At the same time, after attaching the trigger lead wire to the insulated case in advance, the conventional trigger The assembly process can be performed in the same way as a flyback transformer without lead wires. Simplification can be achieved. Also, since there are three recesses in the insulating case, the trigger The lead wire can be pulled out from any direction of the U-shaped core. This makes it possible to realize an excellent flyback transformer whose direction can be easily changed.

[Brief explanation of drawings]

[Fig. 1] Enlarged cross-sectional view of essential parts of a flyback transformer in an embodiment of the present invention

[Fig. 2] An exploded perspective view showing the attachment of the flyback transformer, trigger lead wire, and U-shaped core in the embodiment shown in Fig. 1.

[Figure 3] Perspective view of a conventional flyback transformer

[Explanation of symbols]

6 Insulation case 7 Low pressure bobbin 8 Trigger lead wire 9 Core guide part 10 First recess 11 Second recess 12 Third recess 13 Protrusion 14 U-shaped core 15 Spring

Claims (1)

[Scope of utility model registration request] Claim 1: A low-voltage bobbin wound with a low-voltage winding and a high-voltage bobbin wound with a high-voltage winding are fitted together and housed in an insulating case, and the trigger lead wire is connected to three locations in the core guide part of the insulating case. A flyback transformer is wound around a magnetic leg located outside of an insulating case with a U-shaped core that is held and fixed in a recess and assembled into the insulating case.