KR20110051430A - Inductor, transformer and coil - Google Patents

Abstract

PURPOSE: An inductor, a transformer, and coil are provided to convenient for peeling and increase assembility by including the mold which a hole is formed adjacent to the neighboring to a coil. CONSTITUTION: An inductor includes a winding unit and a core. The winding unit has a mold which inserts a winding unit. A coil(311) is reeled to a proper collection to a use of the coil. The mold forms a groove(315) which revealed the coils at the end point and the start point of the coil. At the end of the lead line, a terminal unit(319) is formed.

Description

Inductors, Transformers & Coils {INDUCTOR, TRANSFORMER AND COIL}

The present invention relates to an inductor, a transformer, and a coil. More specifically, the present invention relates to a coil made of a mold having a mold insert, and having a hole formed around the winding, and an inductor and a transformer using the same.

In general, the inductor, which is one of the electrical / electronic components, is largely divided into a winding type inductor and a multilayer inductor. In particular, the conventional multilayer inductor 10 is formed of a thin copper copper plate, as shown in FIGS. 1 and 2. ) Is formed and attached to the insulating paper 12, laminated in multiple layers, and bonded to the ferrite core 13 to produce.

However, the conventional multilayer inductor 10 forming the conductor pattern using the copper copper plate as described above has a disadvantage in that the heat dissipation characteristics are not good because of insufficient interlayer insulation and difficulty in adjusting the thickness of the conductor pattern.

In addition, by forming the conductor pattern on the insulating paper or the printed circuit board, the thickness of the entire winding increases due to the thickness of the insulating paper printed circuit board, which is disadvantageous to peeling and poor assembly.

In addition, there is a risk that the conductor pattern may be scratched or broken due to the impact.

Therefore, there is a demand for a method capable of excellent assembly, peeling and changing the thickness of the conductor pattern, and preventing breakage of the winding.

The present invention provides a coil made of a mold having a winding as a mold insert and a hole formed around the winding, and an inductor and a transformer using the same.

Technical problems to be achieved by the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned above will be clearly understood by those skilled in the art from the following description. Could be.

In order to achieve the above object, an inductor according to the present invention may include a winding having a mold as a mold insert and a winding part having a mold having a hole formed around the winding, and a core inserted into the hole.

In this case, the winding may be a coil wire or a conductive metal press.

In addition, the mold may be an insulating material.

In addition, the winding part may further include a lead wire which is formed at the starting point and the end point of the winding to expose the winding, and extends the winding through the groove. Here, a terminal portion may be formed at the end of the lead wire.

In addition, one or more winding parts may be stacked, and the core may be attached to upper and lower surfaces of the winding laminate in which the winding parts are stacked.

In addition, the winding may be wound outside the central portion of the winding, and the hole may be formed in the central portion.

On the other hand, the transformer according to the present invention, the first winding is a mold insert (mold insert) and the first winding part having a first mold formed with a first hole around the first winding, the second winding is a mold insert And a second mold having a second hole formed around the second winding, the second winding part being stacked on the first winding part on the top or the bottom of the first winding part in an electrically separated state from the first winding part. The first winding part and the second winding part may include a core attached to the upper surface and the lower surface of the laminated stack laminated and inserted into the hole.

In this case, the first winding and the second winding may be a coil wire or a conductive metal press.

In addition, the first mold and the second mold may be an insulating material.

The first winding may include a first groove in which the first winding is exposed at a starting point and an end point of the first winding, and the second winding may include a second winding at which the second winding is exposed at a starting point and an end point of the second winding. A second lead is formed, the first lead wire extending through the first groove through the first groove and the second lead extending through the second groove through the second groove and the second lead wire electrically separated from the first lead wire It may include. Here, terminal portions may be formed at ends of the first lead wire and the second lead wire.

In addition, one or more of the first winding part or the second winding part may be stacked to form the winding stack.

In addition, the hole of the first winding portion and the hole of the second winding portion may be formed at the same position.

In addition, the first winding is wound outside the central portion of the first winding, the hole of the first winding portion is formed in the central portion of the first winding, the second winding is wound outside the central portion of the second winding The hole of the second winding may be formed at the center of the second winding.

On the other hand, the coil according to the present invention may include a winding and the winding as a mold insert (mold insert) and the mold is formed around the winding hole.

In this case, the winding may be a coil wire or a conductive metal press.

In addition, the mold may further include a lead line at which the winding is exposed at the starting point and the end point of the winding, and extending the winding through the groove. Here, a terminal portion may be formed at the end of the lead wire.

As described above, the inductor, transformer, and coil according to the present invention has a winding as a mold insert, and includes a mold having a hole formed around the winding, so that peeling is easy and stacking and wiring are increased. The assemblability can be increased.

In addition, the insulation is excellent because the winding is arranged inside the mold.

Hereinafter, an inductor, a transformer, and a coil related to the present invention will be described in more detail with reference to the accompanying drawings.

3 is a schematic view showing an inductor related to the present invention.

The inductor shown in FIG. 3 has a winding 111 as a mold insert and a winding portion 110 having a mold 113 having a hole 112 formed around the winding and a core inserted into the hole. It includes 120. 3 is a perspective view showing the structure of the winding part.

The winding part 110 is provided with the mold 113 which makes the winding 111 the mold insert. The mold insert is an element disposed inside the mold, i.e., a configuration in which the winding is disposed in the mold. The winding is thus isolated from the external environment by the mold. In this case, the winding may be a general coil wire or a conductive metal press. Conductor metal presses are advantageous for peeling.

In order to prevent a short circuit of the winding itself and a short circuit between the winding and the outside, the mold 113 is preferably made of an insulating material, and may be a material capable of generating heat in order to generate heat generated in the winding.

Since the winding is placed in the mold, wiring for connection with other circuits is required. Accordingly, the winding unit may further include a groove 115 through which the winding is exposed at the starting point and the end point of the winding, and extending the winding through the groove. The location of the groove can vary depending on the start and end positions of the windings. The lead wire refers to a wire disposed outside the mold through the groove 115 and may have various shapes and directions. For example, in FIG. 3, the groove is formed on the upper surface of the mold, but the groove may be formed on the side surface of the mold. In this case, the length of the lead wire may be very short, thereby protecting the external environment. However, in general, both the lead wire at the winding time point and the lead wire at the winding end point may be advantageously connected to other circuits in one direction in the mold. The terminal portion 119 may be formed at the end of the lead wire. The shape and the material of the terminal portion may be various and may be the same material as the lead wire. The position of the terminal portion may be various, but in the case of an inductor attached to the substrate, it is preferable that the inductor is positioned at the height of the surface attached to the substrate.

Meanwhile, one or more winding parts may be stacked. When the number of turns of the winding can be adjusted to the level required by the circuit, it is possible to configure only one winding part.However, due to the size limit of the inductor attached to the substrate, the winding of the desired number of turns cannot be placed in the mold. have. Alternatively, when the inductor is manufactured, it may be inconvenient to manufacture a winding having a different number of turns for each circuit and to manufacture a mold using the winding as a mold insert. Therefore, it is desirable to manufacture only a mold including a certain number of windings, in which case it may not meet the performance of the inductor required by the circuit. In such a case, the problem can be solved by stacking a plurality of windings.

As such, the inductor having the characteristics required by the user can be obtained by forming the winding stack in which the winding parts are stacked and connecting the terminals of the respective winding parts constituting the winding stack with each other appropriately. In this case, the cores discussed above should be attached to the upper and lower surfaces of the entire winding stack, not each of the windings. Of course, since the insertion part 121 of the core must be able to be inserted in the position of the hole formed in each winding part, each winding part constituting the winding stack should be formed in the same position.

The hole 112 formed in the mold may be formed at various locations around the winding, but is generally formed at the center of the winding. For this purpose, the winding is wound outside the center of the winding, and a hole can be formed in the center of the winding. The diameter of the hole should be larger than the diameter of the insertion part 121 of the core.

As described above, the inductor according to the present embodiment arranges a winding in a mold. This can provide reliable insulation, and also improves heat generation performance through the mold. In particular, in the case of stacking a plurality of winding parts, the winding parts are in contact with each other, so that the heat generation performance is excellent and the assembly performance is improved as compared with the windings formed on the printed circuit board or the insulating paper as before. In addition, there is no risk of damaging the windings by impacts or foreign objects. In addition, since the thickness of the mold can be formed only to cover the winding, it is easy to peel off. Especially when the winding is a conductor metal press, optimum peeling is possible.

4 is a schematic view showing a transformer related to the present invention. It is revealed that the first winding part 210 and the second winding part 230 shown in FIG. 4 are displayed in the transparent state.

The transformer shown in FIG. 4 has a first winding 211 having a mold insert, and a first winding part having a first mold 213 having a first hole 212 formed around the first winding. 210, a second mold 233 having a second winding 231 as a mold insert and having a second hole 232 formed around the second winding, and electrically separated from the first winding part. And a second winding part 230 stacked on an upper surface side or a lower surface side of the first winding part, and attached to the upper and lower surfaces of the winding laminate in which the first winding part and the second winding part are stacked. The core 220 is inserted into the second hole.

In order to construct a transformer, a primary winding and a secondary winding are required.

The first winding part includes a first mold 213 that uses the first winding 211 wound around the primary winding as a mold insert as an element corresponding to the primary winding. That is, the first winding is disposed inside the first mold. The first mold has a first hole 212 formed around the first winding and into which the core is inserted.

The second winding portion 230 includes a second mold 233 which is a component corresponding to the secondary winding and uses the second winding 231 wound with an appropriate number of times with respect to the first winding as a mold insert. In the configuration in which the second winding is disposed inside the second mold, the second mold includes a second hole 232 around the second winding. In addition, the second winding part is stacked on the upper or lower side of the first winding part and is electrically insulated from the first winding part.

The first and second windings may be coil wires or conductor metal presses. Coil wire is generally used, so it is easy to procure materials, but thicker than conductor metal presses, which may be undesirable for peeling.

As a result, the first mold and the second mold surrounding the first winding and the second winding must be an insulating material. In addition, heat generation can be improved by applying a material having excellent heat generation performance.

The first mold and the second mold may have grooves formed at the start point and the end point of each winding to connect the first winding and the second winding disposed therein to other circuits. In detail, the first winding part 210 has a first groove (not shown) in which the first winding is exposed at the starting point and the end point of the first winding 211, and the second winding part 230 is the second winding ( A second groove (not shown) in which the second winding is exposed may be formed at the starting point and the ending point of the 231. Each winding may be connected to the outside by forming lead wires connected to the windings in the first and second grooves formed as described above. Specifically, a first lead wire 217 extending through the first groove through the first groove and a second lead wire 237 extending through the second groove through the second groove and electrically separated from the first lead wire. It may include. The first lead wire may be formed separately from the first winding and connected to a starting point and an end point of the first winding through the soldering means and the first groove, or may be a portion extending from the first winding. The second lead wire may also be formed separately from the second winding and connected to the second winding through the second groove, and may be a portion extending from the second winding. The point is that the first and second leads are wires arranged outside of the mold to connect the windings arranged inside the mold to the outside.

Terminal portions 219 and 239 may be formed at ends of the first lead wire and the second lead wire, respectively.

In this case, the terminal portion may be a means for connecting to an external circuit, and may be a connecting means between the first winding parts or a connecting means between the second winding parts. In FIG. 4, the latter case is illustrated, and an external connection terminal 236 is formed in the second winding part (the lower second winding part of the two second winding parts) separately for connection with an external circuit.

In FIG. 4, one second winding unit is disposed at each of the upper and lower portions of the first winding unit. In this case, the lead wire of the upper second winding part may not reach the lower second winding part due to the first winding part. To this end, it may further include an internal connection terminal 234. The internal connection terminal is a means for performing the connection between each of the windings spaced apart. Of course, this does not mean a connection between the first winding and the second winding.

In FIG. 4, a state in which two second winding parts are stacked is illustrated. As described above, at least one winding part may be stacked to form a winding laminate as necessary.

As shown in FIG. 4, the first winding part and the second winding part may be alternately stacked, or may be stacked together with the second winding part, the first winding part, the first winding part, and the second winding part. The reason for stacking the plurality of windings is the same as described in the inductor above.

On the other hand, the electrical connection may not be made between the plurality of stacked second windings.

For example, as shown in FIG. 7, when the secondary side of the transformer is three terminals, the winding stack may include a second winding part satisfying ⓐ and a second winding part satisfying ⓑ, wherein each of the second winding parts is electrically connected. It must not be connected.

The first winding portion and the second winding portion may have a different shape. Of course, even when the plurality of first windings and the second windings are stacked in plural, the shapes of the first windings or the second windings may also be different. Even so, the holes formed in each must be at least in the same position. Of course, the size of each hole will also be the same.

In summary, it is preferable that the first hole and the second hole are formed at the same position.

In addition, the first hole and the second hole may be formed in the center of the first winding and the second winding. To this end, the first winding may be wound outside the center of the first winding, and the first hole may be formed in the center of the first winding. In addition, the second winding may be wound outside the center of the second winding, and the second hole may be formed in the center of the second winding.

Assembling the transformer configured as described above has a shape as shown in FIG. Since each winding is disposed in a mold, even if a plurality of molds are stacked, no damage is caused to the windings. In addition, as shown in FIGS. 4 and 5, the shape of the first mold and the second mold may be formed into a structure in which the shapes of the first mold and the second mold are engaged with each other. In other words, the mold can be freely deformed to improve the assemblability and can be manufactured with only a thickness enough to cover the winding, which is advantageous for peeling.

6 is a schematic view showing a coil related to the present invention, the lower view shows a transparent state, and the upper view shows a non-transparent state.

The coil shown in FIG. 6 includes a winding 311 and a mold 313 having the winding as a mold insert and having a hole 312 formed around the winding.

The winding 311 is wound with a number of times appropriate for the use of the coil, and may be formed of a coil wire or a conductive metal press.

The mold 313 may further include a groove 315 in which the winding is exposed at the beginning and the end of the winding, and further include a lead wire 317 extending through the groove. The location of the groove can be formed in various places because it can extend the start and end portions of the windings disposed in the mold. In FIG. 6, grooves were formed on the side surfaces.

A terminal portion 319 may be formed at the end of the lead wire.

The coil thus formed has no damage to the external environment since the windings are isolated from the outside. In addition, by wrapping the windings with a mold, the mold can be peeled off to a thickness that covers the windings. In addition, since the shape of the mold can be freely formed, it is possible to easily form a guide part and the like for convenience of assembly.

On the other hand, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not as restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

Applicable to inductors and transformers, in particular, it can replace inductors, transformers and coils disposed on the PCB substrate.

1 is a plan view showing a conventional inductor.

Figure 2 is a side view showing a conventional inductor.

3 is a schematic view showing an inductor in accordance with the present invention.

4 is a schematic view showing a transformer related to the present invention.

5 is a perspective view showing a transformer related to the present invention.

6 is a schematic view showing a coil related to the present invention.

7 is a circuit diagram for explaining an example of a transformer related to the present invention.

Description of the Related Art

110, 210, 230 ... winding section 111, 211, 231, 311 ... winding

112, 212, 232, 312 ... holes 113, 213, 233, 313 ... molded

115, 315 ... Home 117, 217, 237, 317 ... Lead wire

119, 219, 239, 319 ... terminal part 120, 220 ... core

Claims (19)

A winding having a winding and the winding as a mold insert and having a mold having a hole formed around the winding; And A core inserted into the hole; Inductor comprising a. The method of claim 1, The winding is a coil wire or a conductor metal press. The method of claim 1, The mold is an insulator material. The method of claim 1, The winding part has a groove in which the winding is exposed at the start point and the end point of the winding, And a lead wire extending through the groove. The method of claim 4, wherein An inductor having a terminal portion formed at an end of the lead wire. The method of claim 1, One or more windings are laminated, The core is attached to the upper and lower surfaces of the winding stack in which the winding unit is laminated. The method of claim 1, The winding is wound outside the center of the winding, The hole is formed in the center. A first winding part having a first mold having a first insert as a mold insert and having a first hole formed around the first winding; The second winding is a mold insert, and includes a second mold having a second hole formed around the second winding, and is laminated on the first winding part to the upper or lower side in an electrically separated state from the first winding part. A second winding part; And A core attached to the top and bottom surfaces of the winding stack in which the first winding part and the second winding part are stacked and inserted into the first hole and the second hole; Transformer comprising a. The method of claim 8, And the first winding and the second winding are coil wires or a conductive metal press. The method of claim 8, The first mold and the second mold is an insulating material. The method of claim 8, The first winding part has a first groove in which the first winding is exposed at the start point and the end point of the first winding, The second winding part has a second groove in which the second winding is exposed at the start point and the end point of the second winding, A first lead wire extending through the first groove through the first winding; And And a second lead wire extending through the second groove and electrically separated from the first lead wire. The method of claim 11, And a terminal portion formed at ends of the first lead wire and the second lead wire. The method of claim 8, At least one of the first winding part or the second winding part is stacked to form the winding stack. The method of claim 8, And the first hole and the second hole are formed at the same position. The method of claim 8, The first winding is wound outside a central portion of the first winding, The first hole is formed in the center of the first winding, The second winding is wound outside a central portion of the second winding, The second hole is a transformer formed in the center of the second winding. Winding; And A mold having the winding as a mold insert and having a hole formed around the winding; Coil comprising a. The method of claim 16, The winding is a coil wire or a conductor metal press. The method of claim 16, The mold has a groove in which the winding is exposed at the beginning and the end of the winding, And a lead wire extending said winding through said groove. The method of claim 18, A coil having a terminal portion formed at the end of the lead wire.

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