KR101995216B1 - Bobbin and Toroidal Inductor Comprising the Same - Google Patents

Abstract

A bobbin for a toroidal inductor and a toroidal inductor including the bobbin are disclosed.
According to an embodiment of the present invention, there is provided a method of manufacturing a semiconductor device comprising a substantially ring-shaped main body, the main body including a plurality of first projections spaced apart along an outer circumferential surface of the main body, And a first protrusion including a first recessed portion disposed between the first monotonous portion and the first monotonous portion, and a toroidal inductor including the bobbin.

Description

[0001] The present invention relates to a bobbin and a toroidal inductor including the toroidal inductor,

The present invention relates to a bobbin and a toroidal inductor including the bobbin.

The contents described in this section merely provide background information on the present invention and do not constitute the prior art.

Inductors are components used to obtain inductance in electrical and electronic circuits. Various types of inductors exist depending on the shape of the core or the method of winding the windings.

For example, a solenoidal inductor with a rod core, a single-pole linear inductor with only one lead, a spidery inductor with a coil wound in a planar spiral, and a toroidal with a ring- An inductor (toroidal inductor) and the like.

Among these, the toroidal inductor has a characteristic in which the toroidal inductor is repeatedly wound around the inner and outer sides of the ring-shaped core. Due to such winding characteristics, when the conventional toroidal inductor is used for a large current, the thickness of the winding becomes thick, which makes winding difficult. In addition, the conventional toroidal inductor has a problem that it is difficult to regularly arrange windings even after winding.

In addition, in a conventional toroidal inductor in which regular winding is difficult, winding is often performed in a state where windings having the same phases are overlapped with each other.

When winding is performed in the state where the windings are overlapped, the parasitic capacitance between the windings becomes large, which causes a problem that the impedance decreases at high frequencies. Therefore, in order to obtain an inductance equal to or larger than a predetermined magnitude even at a high frequency, it is necessary to reduce the parasitic capacitance by providing a gap between the windings.

On the other hand, the conventional toroidal inductor for large current has a problem that heat is generated severely because the intensity of the current flowing through the coil is large.

Accordingly, it is an object of the present invention to provide a bobbin and a toroidal inductor including the same, wherein the bobbin includes a first protrusion spaced along an outer circumferential surface of the main body, thereby making winding of the winding rule judged and thereby reducing parasitic capacitance .

Further, the present invention has a main purpose of effectively cooling the heat generated in the toroidal inductor by forming the first recessed portion in the first protrusion.

According to an embodiment of the present invention, there is provided a method of manufacturing a semiconductor device comprising a substantially ring-shaped main body, the main body including a plurality of first projections spaced apart along an outer circumferential surface of the main body, And a first protrusion including a first recessed portion disposed between the first monotonous portion and the first monotonous portion.
And a plurality of second protrusions arranged to face the first protrusions along the inner circumferential surface of the main body, the second protrusions being disposed at both ends in the longitudinal direction of the second protrusions, and the second recesses being disposed between the second notches And the first stepped portion is protruded from the outer peripheral surface of the main body by a first height, the first recessed portion protrudes from the outer peripheral surface of the main body by a second height smaller than the first height, The second concave portion is protruded by a third height smaller than the third height from the inner circumferential surface of the main body and the winding wound around the main body is not overlapped with the first recessed portion on the outer circumferential surface of the main body, And the second recessed portion is not overlapped with the second recessed portion on the bobbin.

As described above, according to the present embodiment, the bobbin and the toroidal inductor including the bobbin effectively reduce the parasitic capacitance by winding the windings regularly, and thereby, the toroidal inductor has a high impedance even at high frequencies.

In addition, by uniformly winding the windings, there is an effect that, in the mass production of the toroidal inductor, the impedance fluctuation tendencies according to the frequencies of the respective toroidal inductors become uniform.

Also, the reliability of the toroidal inductor can be improved by providing the shape of the toroidal inductor bobbin and the toroidal inductor including the bobbin for improving the cooling efficiency.

1 is a perspective view of a bobbin for a toroidal inductor according to an embodiment of the present invention.
2 is a perspective view of a toroidal inductor in which a winding is wound on a bobbin for a toroidal inductor according to an embodiment of the present invention.
3 is a side view of a bobbin for a toroidal inductor according to one embodiment of the present invention.
4 is an exploded view of a bobbin for a toroidal inductor illustrating that a magnetic core member is disposed within a body in accordance with one embodiment of the present invention.
5 is a perspective view of a bobbin for a toroidal inductor including a guide wire and a protruding support according to another embodiment of the present invention.
6 is a perspective view of a bobbin for a toroidal inductor including a second protrusion according to another embodiment of the present invention.
7 illustrates a winding method of the toroidal inductor according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the embodiment according to the present invention, the first, second, i), ii), a), b) and the like can be used. These codes are for distinguishing the constituent elements from other constituent elements, and the nature of the constituent elements, the order and the order of the constituent elements are not limited by those codes. It is to be understood that when a component is referred to as being "comprising" or "comprising" an element in the specification, it does not exclude other elements, unless explicitly contradicted by the description, .

1 is a perspective view of a bobbin for a toroidal inductor according to an embodiment of the present invention.

2 is a perspective view of a toroidal inductor in which a winding 200 is wound around a bobbin for a toroidal inductor according to an embodiment of the present invention.

Referring to FIGS. 1 and 2, a bobbin for a toroidal inductor includes a main body 100, a first protrusion 110, and a separation wall 130.

The main body 100 has a substantially ring shape. Therefore, the body 100 has a hollow formed at the center thereof. The winding 200 can be repeatedly wound from the outside to the inside of the main body 100 from the inside to the outside of the main body 100 through the hollow formed in the main body 100, whereby a toroidal inductor .

The main body 100 includes a plurality of first protrusions 110 spaced along the outer circumferential surface of the main body 100.

The first protrusion 110 includes a first protrusion 112 disposed at both longitudinal ends of the first protrusion 110 and a first protrusion 112 disposed between the first protrusion 110 and the first protrusion 112 .

The first projections 110 are formed by placing the windings 200 between the first projections 110 so that the windings 200 are arranged and spaced regularly when the windings 200 are wound on the main body 100 And can be guided to be wound on the main body 100.

Accordingly, the bobbin for the toroidal inductor according to the present invention has an advantage that the toroidal inductor having the high impedance can be obtained by reducing the parasitic capacitance by inducing the winding 200 to be wound regularly.

In addition, by winding the winding 200 uniformly, there is also an advantage that, in the mass production of the toroidal inductor, the impedance fluctuation tendencies according to the frequencies of the respective toroidal inductors are uniform.

The plurality of guide grooves 132 may be spaced along the inner circumferential surface of the main body 100 and the separating wall 130 may be inserted into the guide groove 132 to form at least two chambers in the inner circumferential surface of the main body 100 do.

Depending on the environment in which the toroidal inductor is used, the windings 200 may have more than one phase, and the windings 200 having different phases are generally wound separately from each other.

Since the toroidal inductor has a high winding density with respect to the outer circumferential surface side in the inner circumferential surface of the main body 100 due to the characteristic that the winding 200 is repeatedly wound on the inner side and the outer side of the main body 100, There is a high possibility of being disposed adjacent or in contact with each other.

The separating wall 130 according to an embodiment of the present invention can separate the windings 200 from the inner circumferential surface of the main body 100 and wind them separately.

Also, windings having different phases may experience voltage differences due to phase differences, which may result in unintentional current generation in the windings. Thus, the separating wall 130 may be made of an insulator to enhance the insulation effect between the windings 200 having different phases.

1 and 2, the guide groove 132 protrudes in the axial direction of the main body 100 and has a shape extending in the radial direction of the main body 100 to the outer peripheral surface of the main body 100 . Thus, the guide grooves 132 can guide the windings to be regularly wound on the main body 100.

3 is a side view of a bobbin for a toroidal inductor that includes an alignment line 116 in accordance with one embodiment of the present invention.

3, the first stepped portion 112 preferably has a height H2 protruding from the outer circumferential surface of the main body 100 of 3 mm or more in order to effectively induce winding of the winding 200. However, it is a matter of course for a person skilled in the art that the height H2 is variably formed according to the size of the main body 100 and the thickness of the winding.

The first protrusions 110 are located on both sides of the winding 200 on the outer circumferential surface of the main body 100 when the winding 200 is wound between the first protrusions 110. Therefore, the area of the winding 200 exposed to the outside air on the outer circumferential surface of the main body 100 is reduced, which may cause a problem that the winding 200 is not cooled smoothly.

The bobbin for a toroidal inductor according to the present invention includes the first recessed portion 114 in the first protrusion 110 so as to induce the winding 200 to be regularly wound, The exposed area can be widened. Therefore, there is an advantage that the cooling efficiency of the winding 200 can be increased.

In order to prevent the problem that the first slice 102 and the second slice 104 are misaligned to each other when the main body 100 includes the first slice 102 and the second slice 104, An alignment line 116 may be formed in the first recessed portion 114.

The alignment line 116 may be formed by a first protrusion 110 and a second protrusion 104 disposed on the first section 102 when the first section 102 and the second section 104 are disposed so as not to be offset from each other, And the first protrusion 110 disposed on the first protrusion 110.

The alignment line 116 may be a solid line or a dotted line printed on the first yaw groove 114 or may be slightly protruded or grooved on the first yaw groove 114 but is not limited thereto .

The first recessed groove portion 114 may serve as the alignment line 116 because the first recessed portion 114 itself protrudes from the outer peripheral surface of the main body 100 at a predetermined height without including the alignment line 116 can do. To this end, the height H1 of the first recessed portion 114 protruding from the outer peripheral surface of the main body 100 may be 0.5 mm or more.

4 is an exploded view of a bobbin for a toroidal inductor illustrating that a magnetic core member 400 is disposed within a body 100 according to an embodiment of the present invention.

Referring to FIG. 4, the body 100 includes a first segment 102 and a second segment 104. An accommodation space for the magnetic core member 400 is formed between the first section 102 and the second section 104.

The magnetic core member 400 is disposed inside the main body 100 to increase the magnetic flux of the toroidal inductor. The magnetic core member 400 may be made of a different material depending on the environment in which the toroidal inductor is used.

For example, in the case of a toroidal inductor mainly used at low frequencies, the magnetic core member 400 may be made of a silicon steel sheet or a high permeability alloy (permalloy, etc.). Conversely, in the case of a toroidal inductor mainly used at high frequencies, the magnetic core member 400 may be made of ferrite material to avoid eddy currents. However, the material of the magnetic core member 400 is not limited thereto, and the magnetic core member 400 may be made of a material different from the material described above.

5 is a perspective view of a bobbin for a toroidal inductor including a guide wire 506 and a protrusion support 540 according to another embodiment of the present invention.

Referring to FIG. 5, the bobbin for the toroidal inductor includes a guide wire 506 and a protruding support portion 540.

The plurality of guide wires 506 are formed opposite to the first protrusions 510 along the inner circumferential surface of the main body 500.

The guide line 506 may be a solid line or a dotted line printed on the inner circumferential surface of the main body 500 or may be a shape protruding slightly or grooved on the inner circumferential surface of the main body 500. However,

The guide wire 506 is wound around the inner circumferential surface of the main body 500 by winding the windings having different phases by displaying the segment on the inner circumferential surface of the main body 500 without the separate members such as the guide groove 132 and the separating wall 130, (200) can be separated and wound within the inner circumferential surface of the main body (500).

The plurality of protruding supports 540 are spaced from one side of the main body 500 along the circumferential direction of the main body 500.

The protrusive support portion 540 can also be wound around the inner circumferential surface of the main body 100 such that the windings 200 having different phases can be inserted into the inner circumferential surface of the main body 100 without the separate members such as the guide groove 132 and the separation wall 130, So that it can be separated and wound.

When the guide line 506 or the protruding support 540 is used, it is not necessary to use a physical member such as the guide groove 132 and the separation wall 130, so that a large space can be secured inside the main body 500 .

Therefore, the bobbin for the toroidal inductor according to another embodiment of the present invention uses the guide wire 506 or the protruding support portion 540, thereby widening the area of the coil 200 wound on the inside to be exposed to the outside air, There is an advantage that the winding 200 wound on the inner side can be cooled efficiently.

6 is a perspective view of a bobbin for a toroidal inductor according to another embodiment of the present invention.

Referring to FIG. 6, the bobbin for the toroidal inductor includes a second protrusion 650.

The plurality of second protrusions 650 may be arranged to face the first protrusions 610 along the inner circumferential surface of the main body 600. The second protrusion 650 can induce the winding 200 to be regularly wound even inside the main body 600.

Accordingly, the bobbin for the toroidal inductor according to another embodiment of the present invention can more effectively reduce the generation of parasitic capacitance.

The second projecting portion 650 includes a second stepped portion 652 disposed at both ends in the longitudinal direction of the second projected portion 650 and a second recessed portion 654 disposed between the second stepped portion 652, . ≪ / RTI >

The second protrusions 650 are positioned on both sides of the inner circumferential surface of the main body 600 in the longitudinal direction of the winding 200 when the winding 200 is wound between the second protrusions 650. [ Therefore, the area of the winding 200 exposed to the outside air on the inner circumferential surface of the main body 600 is reduced, which may cause a problem that the winding 200 is not cooled smoothly.

The bobbin for a toroidal inductor according to still another embodiment of the present invention may be configured such that the second recessed portion 310 is formed in the second protrusion 650 to induce winding of the coil 200 to be regular, 200 is widened and the cooling efficiency of the winding 200 can be increased.

7 illustrates a winding method of the toroidal inductor according to an embodiment of the present invention.

7 (a), the winding 200 is sequentially wound between the first protrusions 110 in the first circumferential direction X on the outer circumferential surface of the main body 100. This sequential winding manner is the most common winding method of the toroidal inductor according to one embodiment of the present disclosure.

However, when the inner diameter of the main body 100 is small or the thickness of the winding 200 is thick, the winding 200 shown in Fig. 7 (a) It may be difficult to take up a regular winding.

At least a part of the winding 200 is wound in the first circumferential direction X so that two first protrusions 110 are arranged between the winding 200 and the adjacent winding 200, The windings 200 are sequentially wound on the first protrusions 110 that are not wound in the opposite direction of the first circumferential direction X.

7 (b), even when the inner diameter of the main body 100 is small or the thickness of the winding 200 is large, the winding 200 is wound regularly on the main body 100 So that the parasitic capacitance generation of the toroidal inductor can be effectively reduced.

7 (b), even when the inner diameter of the main body 100 is small or the thickness of the winding 200 is large, in the mass production of the toroidal inductor, There is an effect that the tendency of the impedance fluctuation according to the frequency becomes equal to each other.

Here, the first circumferential direction X is merely defined for expressing the circumferential direction in which the winding of the main body 100 is performed in the two circumferential directions and the opposite direction. Accordingly, although the first circumferential direction X is shown as being clockwise in FIG. 7, the present invention is not limited thereto, and the first circumferential direction X may be counterclockwise.

The foregoing description is merely illustrative of the technical idea of the present embodiment, and various modifications and changes may be made to those skilled in the art without departing from the essential characteristics of the embodiments. Therefore, the present embodiments are to be construed as illustrative rather than restrictive, and the scope of the technical idea of the present embodiment is not limited by these embodiments. The scope of protection of the present embodiment should be construed according to the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

100: main body 110: first protrusion 112: first step portion
114: first recessed portion 130: separating wall 132: guide groove
200: winding 400:
506: guide wire 540:
650: second projection 652: second stepped portion 654: second recessed portion

Claims (13)

A bobbin configured to wind a winding made of a conductive wire having a circular cross section,
A ring-shaped body including a first section and a second section; And
And a magnetic core member disposed inside the main body,
The main body includes:
And a plurality of first protrusions spaced along an outer circumferential surface of the main body, the first protrusions including a first stepped portion disposed at both ends in the longitudinal direction of the first protruded portion and a first recessed portion disposed between the first stepped portions, ; And
A plurality of second protrusions arranged to face the first protrusions along the inner circumferential surface of the main body, the second protrusions being disposed at both ends in the longitudinal direction of the second protrusions, and a second protrusion disposed between the second protrusions, And a second projection including a second portion,
Wherein the first stepped portion is protruded from the outer circumferential surface of the main body by a first height, the first recessed portion is protruded from the outer circumferential surface of the main body by a second height smaller than the first height,
Wherein the second notch portion protrudes from the inner circumferential surface of the main body by a third height and the second recess portion protrudes from the inner circumferential surface of the main body by a fourth height smaller than the third height,
Wherein the winding wound around the main body is not overlapped with the second recessed portion on the inner peripheral surface of the main body without overlapping with the first recessed portion on the outer peripheral surface of the main body,
Wherein the first section and the second section form a receiving space of the magnetic core member,
Wherein the first protrusion is formed with an alignment line in the first recessed groove
And a bobbin for the toroidal inductor. delete The method according to claim 1,
Wherein the first protrusion is protruded from the outer circumferential surface of the main body to a height of 0.5 mm or more
And a bobbin for the toroidal inductor. delete The method according to claim 1,
Wherein the first protruding portion protrudes from the outer peripheral surface of the main body to a height of 3 mm or more
And a bobbin for the toroidal inductor. The method according to claim 1,
And a plurality of guide wires formed along the inner circumferential surface of the main body so as to face the first projections,
Further comprising a bobbin for the toroidal inductor. The method according to claim 1,
The main body includes:
And a plurality of projecting and supporting members spaced from one side of the main body in the circumferential direction of the main body,
Further comprising a bobbin for the toroidal inductor. The method according to claim 1,
A plurality of guide grooves spaced apart from an inner peripheral surface of the main body,
A separating wall inserted into the guide groove to form at least two compartments in an inner peripheral surface of the main body;
Further comprising a bobbin for the toroidal inductor. 9. The method of claim 8,
Wherein the separating wall is made of an insulator
And a bobbin for the toroidal inductor. delete delete 10. A bobbin according to any one of claims 1, 3, and 5 to 9; And
A winding wound between the first projections on an outer circumferential surface of the main body, the winding being wound from the inside to the outside of the main body repeatedly from outside to inside,
And an inductor connected in parallel with the inductor. 13. The method of claim 12,
At least a portion of the windings,
The first projections are wound in a first circumferential direction so that the first projections are disposed between the windings and the adjacent windings and then sequentially wound between the first projections in which the windings are not wound in the direction opposite to the first circumferential direction that
Wherein the inductor has an inductor.

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