KR102127433B1 - Coil assembly for sq type line filter and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a coil assembly for a square (SQ) type line filter, which can be configured to be relatively thinner, so when applied to a panel-type electronic device, an electronic device can be implemented to be slimmer, and in which a plurality of coil units can be connected in series and parallel according to the purpose, and relatively high-slim and high-capacity L values can be implemented. In the coil assembly constituting the SQ type line filter, according to the present invention, provided is the coil assembly for the SQ type line filter, which includes: a core member formed in a predetermined shape; and a plurality of coil members provided in the core member, wherein the core member is provided with a plurality of pairs of coil members by forming a pair with two coil members and the core member is configured to have a common magnetic path shared by magnetic paths formed by adjacent pairs.

Description

Coil assembly for square type line filter {COIL ASSEMBLY FOR SQ TYPE LINE FILTER AND MANUFACTURING METHOD THEREOF}

The present invention relates to a coil assembly for a square type line filter, and more specifically, it can be configured to be relatively thinner, so that when applied to a panel type electronic device, the electronic device can be made slimmer and a plurality of noses. It relates to a coil assembly for a square type line filter that can be connected in series and parallel depending on the application, and can realize a relatively high slim and high capacity L value.

Generally, a switching mode power supply (SMPS) is used as a power supply for display devices, printers, and other electrical and electronic devices.

SMPS is a modular power supply that converts electricity supplied from the outside to suit various electrical and electronic devices such as computers, TVs, VCRs, exchanges, and wireless communication devices. It serves to control and stabilize the output.

In order to improve electromagnetic interference (EMI), these SMPSs are generally equipped with a line filter. The line filter is a coil component in which a coil is wound on a core, and a line filter provided in a conventional SMPS is generally a line filter of a toroidal or troidal type.

Electromagnetic interference can be roughly classified into conductive and radioactive emissions, and each is classified into differential mode electromagnetic interference and common mode electromagnetic interference.

In order to remove the electromagnetic interference in the common mode, a common mode line filter (choke coil) is adopted for the live line and the neutral line among the power input lines, and the electromagnetic interference in the differential mode is eliminated. To do so, at least one differential mode line filter (choke coil) is separately employed.

However, there is a problem in that the volume is increased by the choke coil for removing the above-mentioned electromagnetic interference, so that it cannot meet the consumer's demand for light weight and small size. In particular, there is a problem that it is difficult to be employed in a thin electronic device.

Republic of Korea Patent Publication 10-2019-0020788 (2019.03.04. public) Republic of Korea Patent Publication 10-2015-0046989 (2015.05.04. public) Republic of Korea Registered Patent Publication 10-1740612 (Aug. 26, 2017) Republic of Korea Registered Patent Publication 10-1793878 (2017.11.06.announcement)

Therefore, the present invention for solving the above-described conventional problems can be configured to be relatively thinner, so that when applied to a panel type electronic device, the electronic device can be made slimmer and uses a plurality of coil parts. According to the object of the present invention, a coil assembly for a square-type line filter that can be wired in parallel or in parallel and can realize a L-value of the same capacity while being relatively slim.

The problem of the present invention is not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention for achieving the objects and other features of the present invention, in the coil assembly for a square type (SQ Type) line filter, the core member formed in a predetermined shape; And a plurality of coil members provided in the core member, wherein the core member includes a pair of two coil members and a plurality of pairs of coil members, and the core member includes a magnetic path formed by each pair of neighbors. It is configured to have a common magnetic path (磁路) to be shared, the core member, a pair of parallel upper and lower core rod portion; A core rod part formed in the center portion of the upper core rod portion and the lower core rod portion; Both ends of the core rod portion is formed to be connected to both ends of the upper core rod portion and the lower core rod portion; And a magnetic path separating means for separating magnetic paths formed by each of the plurality of pairs of coil members provided in the upper core rod portion and the lower core rod portion, wherein the magnetic path separating means is the central portion of the core rod portion of the central common path. It characterized in that it is made of a slit hole formed in the longitudinal direction.

In the present invention, the upper core rod portion and the lower core rod portion is composed of a coil winding core rod portion provided with the coil member on both sides of the core rod portion as a boundary between the central common portion and the central common portion, and the cross section of the core rod portion is the central common portion. It is characterized in that it has a cross-sectional area twice that of the coil winding core rod portion.

In the present invention, the upper core rod portion and the lower core rod portion is composed of a coil winding core rod portion provided with the coil members on both sides of the core rod portion as a boundary between the central common, and the upper core rod portion and the lower core rod. When the cross-sectional area of each of the negative and opposite ends of the core rod part is the same, the cross-sectional area of each of the upper core rod part, the lower core rod part, and the core end portions of the both ends is called A, and when the central common part is A', the cross-sectional area is , A'=2A.

In the present invention, the cross-sectional area of each of the upper core rod portion, the lower core rod portion, and the core rod portions at both ends, and the two central common members on both sides around the slit hole, are characterized in that the cross-sectional area of each core rod portion is the same. .

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According to the coil assembly for a square type line filter according to the present invention provides the following effects.

First, the present invention can be configured to be thinner than other coil assemblies for square-type line filters, so that when applied to panel-type electronic devices, the electronic devices have a slim effect.

Second, the present invention can be made slimmer compared to a coil assembly having a relatively equal capacity, and also has an effect of realizing a high capacity L value even when the size is relatively the same.

The effects of the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

1 is a perspective view showing a coil assembly for a square type line filter according to an embodiment of the present invention.
2 is a perspective view showing a core member constituting a coil assembly for a square type line filter according to an embodiment of the present invention.
3 is a perspective view showing a coil assembly for a square type line filter according to another embodiment of the present invention.
4 is a perspective view showing a core member constituting a coil assembly for a square type line filter according to another embodiment of the present invention.

Additional objects, features and advantages of the invention may be more clearly understood from the following detailed description and accompanying drawings.

Prior to the detailed description of the present invention, the present invention is capable of various changes, and may have various embodiments. The examples described below and illustrated in the drawings are intended to limit the present invention to specific embodiments. No, it should be understood to include all modifications, equivalents, or substitutes included in the spirit and scope of the present invention.

When an element is said to be "connected" or "connected" to another component, it is understood that other components may be directly connected or connected to the other component, but other components may exist in the middle. It should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that no other component exists in the middle.

The terms used in this specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as “include” or “have” are intended to indicate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, and that one or more other features are present. It should be understood that the existence or addition possibilities of fields or numbers, steps, operations, components, parts or combinations thereof are not excluded in advance.

In addition, terms such as "... unit", "... unit", "... module" described in the specification mean a unit that processes at least one function or operation, which is hardware or software or hardware and It can be implemented with a combination of software.

In addition, in the description with reference to the accompanying drawings, the same reference numerals are assigned to the same components regardless of reference numerals, and redundant descriptions thereof will be omitted. In the description of the present invention, when it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

Hereinafter, a coil assembly for a square type line filter according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

First, a coil assembly for a square type line filter according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2. 1 is a perspective view showing a coil assembly for a square type line filter according to an embodiment of the present invention, and FIG. 2 is a perspective view showing a core member constituting a coil assembly for a square type line filter according to an embodiment of the present invention .

The coil assembly for a square-type line filter according to an embodiment of the present invention includes: a core assembly (100) formed in a predetermined shape, as shown in FIGS. 1 and 2, in a coil assembly constituting a square-type line filter; And a plurality of coil members 200 wound around the core member 100 and provided, and two coil members 200 are provided in the core member 100 as a pair, and a plurality of coil members are provided. The core member 100 is characterized in that the magnetic paths formed by each pair of neighbors are configured to have a common magnetic path.

1 and 2, the core member 100 includes a pair of parallel upper core rod parts 111 and lower core rod parts 112, and upper core rod parts 111 and lower cores. A core common part formed in the central part of the rod part 112, the core rod part 120, and both ends of the core rod part 131 formed to be connected to both ends of the upper core rod part 111 and the lower core rod part 112, 132).

The upper core rod portion 111 and the lower core rod portion 112 are composed of a coil winding core rod portion provided with coil members 200 on both sides, with a central common lane as the boundary between the core rod portion 120.

Here, the cross-sectional areas of the upper core rod portion 111, the lower core rod portion 112, and the both ends of the core rod portions 131 and 132 are the same, and are formed smaller than the cross-sectional area of the core rod portion 120 as the central common do.

In other words, the cross-sectional area of the upper core rod portion 111, the lower core rod portion 112, and the core rod portions 131, 132 at both ends (that is, the cross-sectional area of the core portion where the coil member is provided in the core member) is referred to as A. , When the cross-sectional area of the core rod part 120 is A'as the central common, it is characterized in that it is formed to satisfy A'=2A.

Next, the coil member 200 is the upper core rod portion 111 and the lower side of the upper core rod portion 111 and the central core rod portion 120 around the common core from the lower core rod portion 112. It is made of coils provided on both sides of the core rod section 112, and all have the same thickness (t), width (d), and number of turns (number of turns: Ts).

In other words, the coil member 200 has a gap in each of the upper core rod portion 111 and the lower core rod portion 112 (that is, each upper core rod based on the central core rod portion 120 as a common reactor). It may be made of a pair of coil members provided on both sides of the portion 110 and the lower core rod portion 112).

In addition, the coil member 200 is a coil member 200 provided on both sides of the coil winding core rod portion of the upper core rod portion 111 is made of a coil member wound in the same direction, the lower core rod portion 111 ) Coil members 200 provided on both sides of the coil winding core rod part are made of coil members wound in the same direction but wound in the opposite direction to the winding direction of the coil wound on the upper core rod part 111.

In other words, the pair of coil members 200 respectively wound on one side of the upper core rod portion 111 and the lower core rod portion 112 based on the core rod portion 120 as the central common path is opposite to each other. It is made of a coiled coil member, and a pair of coil members 200 respectively wound on the other side of the upper core rod part 111 and the lower core rod part 112 based on the core rod part 120 as the central common part. Is composed of coil members wound in opposite directions, but the coil members wound on the same line of each of the upper core rod part 111 and the lower core rod part 112 are made of coil members wound in the same direction.

In addition, each of the coil members 200 provided in each of the upper core rod portion 111 and the lower core rod portion 112 is connected in series and/or in parallel as described above.

The coil assembly for a square-type line filter of the present invention has such a structural characteristic that inductance increases at all frequencies and has a high L value compared to a conventional coil assembly having a relatively equal capacity.

On the other hand, Figure 3 is a perspective view showing a coil assembly for a square type line filter according to another embodiment of the present invention, Figure 4 is a core member constituting a coil assembly for a square type line filter according to another embodiment of the present invention As a perspective view, there is a difference in the core rod portion in the central common passage from the coil assembly for the square type line filter of the above-described embodiment.

In the description of the coil assembly for a square type line filter according to another embodiment below, the same components are assigned the same reference numerals as the coil assembly for a square type line filter of the above-described embodiment, and detailed description thereof is omitted. Only the differences are explained.

In the coil assembly for a square type line filter according to another embodiment of the present invention, the core rod unit 120 as a central common member, unlike the core member 100 of one embodiment described above, the core member 200 in another embodiment ) Is a central common part, and is divided into a ruler for separating magnetic paths formed by each of the two pairs of coil members 200 provided in the upper core rod portion 111 and the lower core rod portion 112 in the core rod portion 120. It further includes means.

The magnetic path separation means may be formed of a long hole or a slit hole 121 that is formed in the longitudinal direction from the central portion of the core rod portion 120 as the central common path.

Here, the cross-sectional area of the upper core rod portion 111 and the lower core rod portion 112 and the both ends of the core rod portions 131 and 132, and the cross section of the core rod portion 120 of the central common reactor are formed to be the same. It is characterized by.

Specifically, the cross-sectional area of the upper core rod portion 111, the lower core rod portion 112, and the core rod portions 131 and 132 at both ends (that is, the cross-sectional area of the core portion where the coil member is provided in the core member) is referred to as A. , When the cross-sectional area of the core rod portion 120 is A'as a central common crossing the slit hole 121, it is characterized in that it is formed to satisfy A'=2A.

In other words, the cross-sectional area of each of the core rod portions (called A1) is the same as the two central commons around the slit hole 121, and the upper core rod portion 111, the lower core rod portion 112, and both ends. Each of the core rod portions 131 and 132 has the same cross-sectional area (referred to as A2), and the cross-sectional areas of A1 and A2 are the same.

The coil assembly for a square-type line filter according to this other embodiment has a high L value as compared to a conventional coil assembly having a relatively equal capacity, such as the coil assembly for a square-type line filter of one embodiment described above, and at the same time, the magnetic path The magnetic path formed by each pair of coil members 200 between the upper core rod portion 111 and the lower core rod portion 112 by the separating means (slit hole 121) is the central portion, that is, the central rod as the central common part. It is separated from the (120), so that relatively less heat is generated.

On the other hand, in the coil assembly for a square type line filter according to the present invention, the upper core rod portion 111 and the lower core rod portion 112 of the core member 100, the core rod portion 120 of the central common reactor, and both ends The core rod parts 131 and 132 may be configured separately and configured to be coupled to each other, wherein the coiled coil member 200 in the form of a wound tube is the upper core rod part 111 and the lower core rod part 112. ) In the state provided with a gap in each, the central common path is assembled with the core rod portion 120 and the both ends of the core rod portions 131 and 132.

The upper core rod portion 111 and the lower core rod portion 112, the core common portion, and the core rod portion 120 and the both ends of the core rod portions 131, 132 are formed with fitting protrusions and fitting grooves formed on their opposing engagement surfaces. It is assembled by fitting, and then it can be more firmly integrated by applying an epoxy resin to the bonding portion.

In another embodiment, the upper core rod portion 111 and the lower core rod portion 112 are formed with a gear portion having a rotating projection on an outer surface at one end and a rotating projection at the other end. In addition, a rotation protrusion receiving groove is formed at both ends of the core rod portions 131 and 132 opposite to both ends of the upper and lower core rod portions, and a gear portion matching groove corresponding to the gear portion is formed at the opposite sides of the gear portion. do.

In addition, the rotation protrusion receiving groove formed in the central portion of the gear fitting groove is formed deeper than the length of the rotating protrusion (that is, as deep as the thickness of the gear portion), and the gear portion and the gear fitting groove are formed to be forcedly fitted.

The upper and lower core rod parts 111 and 112 may be formed by winding coils through an automatic winding device instead of inserting and mounting cylindrical coil members separately formed in a cylindrical shape.

Specifically, the rotational projections of the upper and lower core rod portions 111 and 112 are rotatably mounted in the rotation protrusion receiving grooves of both ends of the core rod portions 131 and 132 (temporarily mounted), automatically. A pair of gears constituting a winding device are sequentially coupled to each of the upper core rod portion 111 and the lower core rod portion 112, and the upper core rod portion or the lower core rod portion gear portion is rotatably mounted. It is arranged to mesh on the upper and lower sides, and the gear of the automatic winding device is rotated, and the coil is wound on the upper core rod portion or the lower core rod portion.

That is, the winding of the coil member is wound by rotating a pair of gears constituting an automatic winding device at the upper and lower points of the gear portion of the core rod portion.

Then, when the winding of the coil member is completed, the side on which the gear portion is formed is further pushed to the side on which the gear portion coincidence groove is formed to fix the interference, thereby firmly fixing the coupling between the upper and lower core rod portions and the core rod portion. Even in this case, an epoxy resin may be applied to the bonding portion to make the integration more robust.

According to the coil assembly for a square type line filter according to the present invention as described above, it can be made thinner than other coil assemblies for a square type line filter, so that the electronic device is slimmer when applied to a panel type electronic device. It can be implemented as (slim), it can be made slimmer compared to the coil assembly of a relatively equal capacity, and also has the advantage of realizing a high-capacity L value even if the size is relatively the same.

Although the embodiments as described above have been described by the limited drawings, those of ordinary skill in the art may apply various technical modifications and variations based on the above. For example, the described techniques are performed in a different order than the described method, and/or the components of the described system, structure, device, circuit, etc. are combined or combined in a different form from the described method, or other components Alternatively, proper results can be achieved even if replaced or substituted by equivalents.

The embodiments described in the present specification and the accompanying drawings are merely illustrative of some of the technical spirit included in the present invention. Therefore, the embodiments disclosed in the present specification are not intended to limit the technical spirit of the present invention, but to explain the present invention, it is obvious that the scope of the technical spirit of the present invention is not limited by these embodiments. Within the scope of the technical spirit included in the specification and drawings of the present invention, modifications and specific embodiments that can be easily inferred by those skilled in the art should be interpreted as being included in the scope of the present invention.

100: core member
111: upper core rod portion
112: Hi-side core rod part
120: core rod section with a central common
131, 132: both ends of the core rod
200: coil member

Claims (6)

In the coil assembly for a square type (SQ Type) line filter,
A core member formed in a predetermined shape; And
Including; a plurality of coil members provided in the core member,
The core member is provided with a plurality of pairs of coil members by pairing the two coil members,
The core member is configured to have a common magnetic path shared by magnetic paths formed by each neighboring pair,
The core member includes a pair of parallel upper and lower core rod parts; A core rod part formed in the center portion of the upper core rod portion and the lower core rod portion; Both ends of the core rod portion is formed to be connected to both ends of the upper core rod portion and the lower core rod portion; And a magnetic path separation means for separating magnetic paths formed by each of the plurality of pairs of coil members provided in the upper core rod portion and the lower core rod portion,
The magnetic path separating means is characterized in that the central common passage consists of a slit hole formed in the longitudinal direction in the central portion of the core rod portion.
Coil assembly for square type line filter.
According to claim 1,
The upper core rod portion and the lower core rod portion are composed of a coil winding core rod portion in which the coil members are provided on both sides of the core rod portion as a boundary between the central commons.
The cross-sectional area of the core rod portion of the central common reactor is formed to have a cross-sectional area twice that of the coil winding core rod portion.
Coil assembly for square type line filter.
According to claim 1,
The upper core rod portion and the lower core rod portion are composed of a coil winding core rod portion in which the coil members are provided on both sides of the central common lane as a core rod portion.
The cross-sectional area of each of the upper core rod portion, the lower core rod portion, and the both ends of the core rod portion is the same,
When the cross-sectional area of each of the upper core rod portion, the lower core rod portion and the core end portions of both ends is A, and when the cross-sectional area of the core rod portion is A'as the central common, A'=2A.
Coil assembly for square type line filter.
delete delete According to claim 1,
The cross-sectional area of each of the upper core rod portion, the lower core rod portion, and the core rod portions at both ends, and the cross-sectional area of each of the core rod portions of the two central common passages on both sides of the slit hole are the same.
Coil assembly for square type line filter.

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