KR940005076Y1 - Core combination device for fbt - Google Patents

Abstract

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Description

Core coupling device of flyback transformer

1 is a conventional core coupling device, a perspective view of a first (a) top, a lower core and a gap, a first (b) a perspective view of a core band, and a first (c) a core band in a state in which a core band is coupled to a core Perspective view.

2 is a core coupling device of the present invention, the second (a) is a perspective view of the upper and lower cores, the second (b) is a perspective view of the core band, the second (c) is a perspective view of the core band coupled to the core .

* Explanation of symbols for main parts of the drawings

4: Core 4a: Tightening Groove

4b: outer void 4c: inner void

5: Core Band 5a: Gap Maintenance

5b: auxiliary piece 5c: fastener

5d: Guide

The present invention relates to a core coupling device of a flyback transformer, which is a core and core band coupling by attaching the core gap retaining piece and the auxiliary piece to the core band in order to prevent the loss of the core gap paper and the gap of the core, especially for maintaining the voids. To facilitate the process.

The core coupling device in the conventional flyback transformer has a length so as to fasten the band 2 itself as shown in Fig. 1 (b) to the core 1 having the same shape as the figure 1 (a). The groove 1a in the direction is formed on the entire surface of one side of the core, and the plate-shaped core gap paper 3 is inserted into the upper and lower outer spaces 1b and the inner space 1c to form the upper and lower cores. In the state spaced at a predetermined interval, the band 2 is fastened to the groove 1a of the upper and lower cores 1, so that the first (c) is also coupled as shown in the figure.

However, in the conventional core coupling device, since the core cross section is not large in locating the core gap 3 in the outer gap 1b and the inner gap 1c, the core gap 3 is likely to be detached and lost, and also the small It is very difficult to pick up the size of the gap paper and place it on the core cross section. In the process of picking up the gap paper, the gap paper becomes dirty or caught in foreign matters. The leakage magnetic flux in the voids 1b and 1c is increased to degrade the performance of the flyback transformer.

The present invention has been made to solve the above problems, and this is particularly the core band that integrally formed a plurality of coupling pieces to facilitate the maintenance of the gap between the core and the coupling operation when the upper and lower cores of the flyback transformer, and the core When the coupling groove is formed to correspond to the band is characterized by a lower core structure and described in detail by the accompanying drawings the configuration of the subject innovation for carrying out this.

That is, as shown in FIG. 2 (a), the core 4 of the present invention has a fastening groove 4a having a predetermined depth in the upper and lower portions thereof, and the core of the present invention as shown in FIG. 2 (b). The band 5 is a plate-like band having the same width as that of the core surface. The band 5 is engaged with the guide piece 5d at the distal end and the core fastening groove 4a to facilitate engagement with the core. The fastening piece 5c slits to have elasticity, and the gap retaining piece 5a and the gap retaining piece 5a near the gap retaining piece 5s so as to horizontally coincide with the position of the outer cavity 4b when the upper and lower cores are engaged. The auxiliary piece 5b is formed integrally with the core band at right angles.

Here, the gap holding piece 5a is formed so that its thickness is twice as large as the inner gap 4c or the outer gap 4b generated when the upper and lower cores are combined.

According to the present invention configured as described above, when the core band 5 is inserted into the core 4 as shown in the coupling diagram shown in FIG. 2 (c), the guide piece 5d guides along the core surface to facilitate coupling. At the same time, the gap holding piece 5a is fitted to the outer cavity 4b and the fastening piece 5c is fastened to the fastening groove 4a of the core 4.

At this time, since the fastening groove 4a has a certain depth, when the fastening piece 5c is coupled, it cannot be separated by the spring action of the fastening piece.

On the other hand, the auxiliary piece 5b is fixed to a position such that the upper and lower cores 4 do not deviate from the outer void portion 4b so that the cores are securely coupled.

The reason why the gap paper is not inserted into the inner space 4c is that the thickness of the gap retaining piece 5a fitted to the outer space 4b is twice the thickness of the inner space 4c, so that the gap must be maintained separately. There will be no.

That is, in order to prevent self saturation of the core, a gap is provided in the core when the initial design requires a certain interval (for example, A (mm)) so that the sum of the inner and outer voids is A (mm).

Therefore, the present invention forms an auxiliary piece, a gap retaining piece for maintaining the gap, and a fastening piece with the core integrally in the core band so as to be combined with the core so that the core band is separated and the gap is lost. As the problem is solved, the voids can be maintained at a certain position at all times, and since the width of the core band has the same width as that of the core surface, the core band wraps around the outer surface of the core, so that the amount of radiated magnetic field generated in the core is remarkable. It is a useful design that can reduce the effect.

Claims (2)

In a flyback transformer in which two upper and lower cores are joined in a band, elasticity inside the band when the core and the guide piece 5d of the tip for guiding the coupling operation with the upper and lower cores are combined. The gap retaining piece 5a slit so as to horizontally coincide with the position of the outer space 4b for the gap retaining of the fastening piece 5c and the upper and lower cores to have the slits, and the core misalignment in the vicinity of the gap holding piece. To this end, a plate-shaped core band 5 in which an auxiliary piece 5b perpendicular to the core band surface is integrally formed, and a fastening groove 4a corresponding to the fastening piece 5c of the core band 5 are formed. Core coupling device of the flyback transformer, characterized in that the core (4). 2. The core coupling device of a flyback transformer according to claim 1, wherein the gap retaining piece (5a) is formed so as to double the inner gap (4c) generated when the upper and lower cores are bonded.