KR20120001712U - slim-Type Bobbin for transformer - Google Patents

Abstract

The present invention relates to a bobbin for a transformer. The transformer bobbin is a bobbin body consisting of a primary coil winding unit in which the primary coil is wound and a secondary coil winding unit in which the secondary coil is wound, an input terminal substrate integrally formed at one end of the bobbin body, and integrally at the other end of the bobbin body. An output terminal substrate to be formed, a first partition wall disposed adjacent to the input terminal substrate, and having a plurality of first grooves through which the primary coil passes, and a plurality of second separating the primary coil winding and the secondary coil winding; Contain bulkheads. Here, the primary coil winding is located between the secondary coil winding.

Description

Slip-Type Bobbin for Transformer

The present invention relates to a bobbin for a transformer, and to a bobbin for a stand-by-transformer of a thin plate type capable of slimming down the product and improving quality.

Recently, with the development of liquid crystal displays (LCDs), transformers used for backlights of the liquid crystal displays have also developed. The transformer converts a DC voltage into a DC voltage so that the drive circuit can be driven.

The transformer includes a control unit for generating a driving frequency, a driving unit for converting a DC current into an alternating current according to the driving frequency, and a transformer for transforming the alternating current into a high-voltage alternating current. Here, a thin plate type is used for the transformer so as to minimize the thickness of the liquid crystal display.

In general, the transformer bobbin is a bobbin body composed of a primary coil winding part in which a primary coil is wound and a secondary coil winding part in which a secondary coil is wound, and integrated at both ends of the bobbin body. And an input terminal board and an output terminal board. The bobbin body may include a plurality of partition walls for separating the primary coil winding and the secondary coil winding.

The primary coil is connected to an input circuit whose voltage must be changed. The secondary coil is connected to an output circuit in which the changed voltage is used. Accordingly, the primary coil may be a low pressure coil connected to the input terminal substrate. The secondary coil may be a high pressure coil connected to the output terminal substrate.

The primary coil may have a relatively large diameter compared to the secondary coil. Accordingly, the primary coil may have a relatively small number of turns compared to the secondary coil. In addition, the primary coil winding may be formed of a single region, and the secondary coil winding may be formed of a plurality of regions. To this end, the transformer bobbin may include a plurality of slits for separating the secondary coil winding into the plurality of areas.

The transformer ratio of the transformer is mainly determined by the winding ratio of the primary coil wound on the primary coil winding and the secondary coil wound on the secondary coil winding. The transformer ratio of the transformer may also be determined by the shape of the bobbin body, the distance between the primary coil and the secondary coil, and the positional relationship between the primary coil winding and the secondary coil winding.

In order to minimize the size of the transformer bobbin, the primary coil winding portion and the secondary coil winding portion are positioned side by side in the bobbin body. Accordingly, the primary coil drawn from the input terminal substrate is wound around the primary coil winding of the bobbin body and then drawn out to the input terminal substrate.

However, the above-described transformer bobbin has a problem in that the leakage flux of the transformer occurs when the primary coil is not fixed constantly, so that the leakage current of the transformer is rather large.

The problem to be solved by the present invention is to provide a bobbin for a transformer that can minimize the thickness and size to make the product slim, and to fix the position of the primary coil drawn from the input terminal board and the primary coil drawn out to the input terminal board will be.

The problems to be solved by the present invention are not limited to the aforementioned problems. Other tasks not mentioned here will be apparent to those skilled in the art from the following description.

The transformer bobbin according to the technical idea of the present invention for achieving the problem to be solved is integrally formed with a bobbin body consisting of a primary coil winding unit winding the primary coil and a secondary coil winding unit winding the secondary coil, one end of the bobbin body An input terminal substrate to be formed, an output terminal substrate integrally formed at the other end of the bobbin body, a first partition wall adjacent to the input terminal substrate and having a plurality of first grooves through which the primary coil passes, and the primary coil It includes a plurality of second partition walls separating the winding portion and the secondary coil winding. Here, the primary coil winding is located between the secondary coil winding.

The plurality of first grooves may be formed on the same side of the first partition wall.

Each of the plurality of second partitions may have a plurality of second grooves through which the secondary coil passes. Here, the plurality of second grooves may be formed on side surfaces of the plurality of second partition walls facing the side surfaces of the first partition wall on which the plurality of first grooves are formed.

The plurality of second grooves may have a relatively thin depth as compared to the plurality of first grooves.

The first partition wall may have a plurality of third grooves through which the secondary coil passes on a side surface opposite to a side surface on which the plurality of first grooves are formed. Here, the plurality of third grooves may have the same depth as the plurality of second grooves.

One or a plurality of second partition walls positioned between the primary coil winding part and the first partition wall among the plurality of second partition walls may pass through the primary coil on a side opposite to a side surface on which the plurality of second grooves are formed. A plurality of fourth grooves may be formed. Here, the plurality of fourth grooves may have the same depth as the plurality of first grooves.

Each of the input terminal substrate and the output terminal substrate may have a lead-out path through which the primary coil or the secondary coil passes on the same side as that of the first partition wall on which the plurality of first grooves are formed.

Transformer bobbin according to the technical idea of the present invention by controlling the positional relationship between the primary coil winding portion and the secondary coil winding portion to enable the slimmer of the product, and the transformation of the product by fixing the primary coil drawn in and drawn out of the primary coil winding Rain fluctuations can be prevented.

1A and 1B are perspective views illustrating a bobbin for a transformer according to an embodiment of the present invention.
2A and 2B are plan views illustrating a bobbin for a transformer according to an embodiment of the present invention.
Figure 3a is a front view showing a first partition of the transformer bobbin according to an embodiment of the present invention.
3B and 3C are front views illustrating a second partition wall of a bobbin for a transformer according to an embodiment of the present invention.

Details of the above object and technical configuration of the present invention and the effect thereof according to the present invention will be more clearly understood by the following detailed description with reference to the drawings showing an embodiment of the present invention. Here, since the embodiments of the present invention are provided to sufficiently convey the technical spirit of the present invention to those skilled in the art, the present invention may be embodied in other forms so as not to be limited to the embodiments described below.

In addition, the parts denoted by the same reference numerals throughout the specification means the same components, in the drawings the length and thickness of the layer or region may be exaggerated for convenience. In addition, when the first component is described as being "on" the second component, the first component and the first component are not only located above the direct contact with the second component, but also the first component and the first component. It also includes the case where the 3rd component is located between 2 components.

Here, the terms first, second, etc. are used for describing various components and are used for the purpose of distinguishing one component from another component. However, the first component and the second component may be arbitrarily named for convenience of those skilled in the art without departing from the technical spirit of the present invention.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. For example, an element represented in singular form includes a plurality of elements unless the context clearly dictates a singular number. In addition, in the specification of the present invention, terms such as "comprise" or "have" are intended to designate that there exists a feature, number, step, operation, component, part, or combination thereof described on the specification, or one or It is to be understood that no other features, numbers, steps, actions, components, parts, or combinations thereof, are excluded in advance or in part.

In addition, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

(Example)

1A and 1B are perspective views illustrating a bobbin for a transformer according to an embodiment of the present invention. 2A and 2B are bottom plan views showing a bobbin for a transformer according to an embodiment of the present invention.

Referring to Figures 1a, 1b, 2a and 2b, it will be described for the transformer bobbin according to the technical idea of the present invention. The transformer bobbin according to the technical idea of the present invention is an input terminal formed integrally with one end of the bobbin body 110 and the bobbin body 110 formed of a primary coil winding 125 and a secondary coil winding 135. It may include a substrate 120 and the output terminal substrate 130 integrally formed at the other end of the bobbin body 110. Here, the bobbin body 110 may have a hollow portion 111 penetrating in the longitudinal direction of the bobbin body 110 in the central portion.

One or a plurality of primary coils 121 may be wound around the primary coil winding 125. One or more secondary coils 131 may be wound around the secondary coil winding 135. The primary coil 121 may be connected to an input circuit to change the voltage. The secondary coil 131 may be connected to an output circuit in which the changed voltage is used.

Accordingly, the primary coil 121 may be connected to the input terminal substrate 120. The secondary coil 131 may be connected to the output terminal substrate 130. The input terminal board 120 may be a low voltage terminal board, and the output terminal board 130 may be a high voltage terminal board.

That is, the primary coil winding 125 may be wound around the primary coil 121 drawn from the input terminal substrate 120. The secondary coil winding 135 may be wound around the secondary coil 131 drawn from the output terminal substrate 130. Here, the primary coil 121 and the secondary coil 131 wound on the primary coil winding 125 and the secondary coil winding 135 may be drawn out to the input terminal substrate 120.

The transformer bobbin according to the present invention may include the bobbin body 110 in which the primary coil winding 125 is positioned between the secondary coil winding 135. Accordingly, the voltage of the current induced in the secondary coil 131 wound on the secondary coil winding 135 by the primary coil 121 wound on the primary coil winding 125 may be increased more efficiently. Can be. Therefore, the overall size of the bobbin body 110 can be reduced.

The primary coil 121 may have a second diameter w2 that is relatively larger than the first diameter w1 of the secondary coil 131. Accordingly, the primary coil 121 may have a relatively small number of turns compared to the secondary coil 131.

The input terminal substrate 120 may have a first draw-out path 122 through which the primary coil 121 passes. The output terminal substrate 130 may have a second draw-out path 132 through which the secondary coil 131 passes.

Here, the first draw-out path 122 and the second draw-out path 132 may be formed on the side of the same direction. In addition, the first outlet passage 122 may pass through the primary coil 121 wound on the primary coil winding 125 and the secondary coil 131 wound on the secondary coil winding 135. Can be.

The primary coil winding 125 may be formed of a single region. Transformer bobbin according to an embodiment of the present invention is shown that the secondary coil winding 135 is made of a single region. However, the secondary coil winding 135 may be formed of a plurality of regions separated by a plurality of slits (not shown).

The bobbin body 110 may include a first partition wall 200 adjacent to the input terminal substrate 120, and a plurality of second separation portions separating the primary coil winding 125 and the secondary coil winding 135. The partitions 300 may be included.

Here, the plurality of second partitions 300 may include one or a plurality of twenty-first partition walls 310 and the primary coil windings positioned between the primary coil winding 125 and the input terminal substrate 120. One or more twenty-second partition walls 320 disposed between the 125 and the output terminal substrate 130 may be included.

3A is a front view showing a first partition wall 200 of a bobbin for a transformer according to an embodiment of the present invention. 3B is a front view illustrating a twenty-first space 310 of a bobbin for a transformer according to an embodiment of the present invention. 3C is a front view illustrating a twenty-second partition 320 of a bobbin for a transformer according to an embodiment of the present invention.

3A to 3C, a first partition 200 and a plurality of second partitions 300 of a bobbin for a transformer according to the spirit of the present invention will be described.

The first partition wall 200 may include a first partition body 201 and a plurality of first grooves 202 spaced apart from each other on one side of the first partition body 201. In this case, the plurality of first grooves 202 may pass through the primary coil 121 drawn into and out of the input terminal substrate 120. To this end, the plurality of first grooves 202 may have a first depth h1.

The plurality of first grooves 202 are formed on the same side of the first lead-out passage 122 of the input terminal substrate 120 and the second lead-out passage 132 of the output terminal substrate 130. Can be.

The twenty-first partition wall 310 may include a twenty-first partition body 311 and a plurality of twenty-first grooves 313 spaced apart from each other on one side of the twenty-first partition body 311. The twenty-second partition wall 320 may include a twenty-second partition body 321 and a plurality of twenty-second grooves 323 formed spaced apart from each other on one side of the twenty-second partition body 321.

The plurality of twenty-first grooves 313 and the plurality of twenty-second grooves 323 may pass through the secondary coil 131 drawn from the output terminal substrate 130. The plurality of twenty-first grooves 313 and the plurality of twenty-second grooves 323 may be formed on side surfaces of the same direction. Here, the plurality of twenty-first grooves 313 and the plurality of twenty-second grooves 323 respectively face the side on which the plurality of first grooves 202 of the first partition wall 200 are formed. The barrier rib 310 and the twenty-second partition wall 320 may be formed on the side surfaces thereof.

The plurality of twenty-first grooves 313 and the plurality of twenty-second grooves 323 may have the same shape. That is, the plurality of twenty-first grooves 313 and the plurality of twenty-second grooves 323 may have the same second depth h2. Here, the second depth h2 may be a relatively thin depth compared to the first depth h1.

The first partition 200 may be formed with a plurality of third grooves 203 through which the secondary coil 131 passes on a side opposite to a side surface on which the plurality of first grooves 202 are formed. Here, the plurality of third grooves 203 may have the same second depth h2 as the plurality of twenty-first grooves 313 and the plurality of twenty-second grooves 323.

In the twenty-first partition wall 310, a plurality of fourth grooves 312 through which the primary coil 121 passes may be formed on a side opposite to a side surface on which the plurality of twenty-first grooves 313 are formed. Here, the plurality of fourth grooves 312 may have the same first depth h1 as the plurality of first grooves 202.

As a result, the transformer bobbin according to the present invention configures the bobbin body such that the primary coil winding is positioned between the secondary coil windings. Accordingly, the transformer bobbin according to the present invention can minimize the thickness and size of the bobbin body to enable slimming of the product.

In the transformer bobbin according to the present invention, a plurality of first grooves through which primary coils drawn in and out of the input terminal substrate pass are formed at one side of the first partition wall positioned adjacent to the input terminal substrate. Accordingly, the transformer bobbin according to the present invention can prevent the transformer ratio change due to the positional change of the primary coil.

110: bobbin body 120: input terminal board
121: primary coil 130: output terminal board
131: secondary coil 200: the first partition
300: multiple second bulkheads

Claims (7)

A bobbin body including a primary coil winding unit in which a primary coil is wound and a secondary coil winding unit in which a secondary coil is wound;
An input terminal substrate integrally formed at one end of the bobbin body;
An output terminal substrate integrally formed at the other end of the bobbin body;
A first partition wall positioned adjacent to the input terminal substrate and having a plurality of first grooves through which the primary coil passes; And
Comprising a plurality of second partition walls for separating the primary coil winding and the secondary coil winding,
The primary coil winding is a transformer bobbin positioned between the secondary coil winding.
The method of claim 1,
The plurality of first grooves are transformer bobbins formed on the same side of the first partition.
The method of claim 2,
Each of the plurality of second partitions may include a plurality of second grooves through which the secondary coil passes, and the plurality of second grooves may face the side surfaces of the first partition wall where the plurality of first grooves are formed. A bobbin for a transformer formed on the sides of the second partitions.
The method of claim 3, wherein
The plurality of second grooves have a relatively thin depth compared to the plurality of first grooves.
The method of claim 3, wherein
The first partition wall is formed with a plurality of third grooves through which the secondary coil passes on a side opposite to the side surface on which the plurality of first grooves are formed, and the plurality of third grooves have the same depth as the plurality of second grooves. Bobbin for transformer with.
The method of claim 3, wherein
One or a plurality of second partition walls positioned between the primary coil winding part and the first partition wall among the plurality of second partition walls may pass through the primary coil on a side opposite to a side surface on which the plurality of second grooves are formed. A plurality of fourth grooves are formed, wherein the plurality of fourth grooves have the same depth as the plurality of first grooves.
The method of claim 2,
The input terminal substrate and the output terminal substrate, respectively, the transformer bobbin is formed on the same side of the side of the first partition where the plurality of first grooves are formed, the draw-out passage through which the primary coil or the secondary coil passes.

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