Inductor

Abstract

The utility model discloses an inductor. According to one embodiment of the utility model, the inductor comprises a pair of first base parts and a pair of second base parts, a pair of second base parts formed at positions spaced apart from and facing the pair of first base parts; and a skeleton part which is formed between the first base part and the second base part and is composed of a main body part. The main body portion includes a main body having a core insertion hole penetrating through an upper portion and a lower portion and a coil wound around the outside, a first coil guide portion formed so as to protrude along an edge of the upper portion, and a second coil guide portion formed so as to protrude along an edge of the lower portion.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to an inductor. Background Art

[0002] Inductors are devices that utilize electromagnetic induction to generate induced power through the time-varying flow of current. They are considered a crucial component of electrical circuits. These inductors are also used in displays and charging station circuits. Furthermore, various electronic devices, including electric vehicles, utilize multiple components, necessitating the reduction of component size, maintaining rigidity, and improving heat dissipation performance. Utility Model Content

[0003] Technical issues to be solved

[0004] An object of the embodiments of the present disclosure is to provide an inductor that can be miniaturized.

[0005] Another object of the embodiments of the present disclosure is to provide an inductor capable of sufficiently ensuring a winding space for a coil.

[0006] Furthermore, an object of an embodiment of the present disclosure is to provide an inductor in which a wound coil does not protrude outside the inductor.

[0007] Furthermore, an object of the embodiments of the present disclosure is to provide an inductor for reinforcing the rigidity of a skeleton portion.

[0008] Means for solving problems

[0009] According to one embodiment, an inductor includes: a pair of first base portions; a pair of second base portions formed at positions spaced apart from and facing the pair of first base portions; and a skeleton portion formed between the first base portions and the second base portions and composed of a main body portion, the main body portion including a body having a core insertion hole extending through an upper portion and a lower portion and having a coil wound around the outside, a first coil guide portion protrudingly formed along the upper edge, and a second coil guide portion protrudingly formed along the lower edge.

[0010] The first base portion may be formed to protrude from both sides of a portion of the first coil guide portion.

[0011] The second base portion may be formed to protrude from both sides of a portion of the second coil guide portion.

[0012] At least one substrate supporting groove is formed in a corner region of a portion of the second base portion.

[0013] The second base portion may be formed in a structure in which a thickness thereof gradually increases from an outer side toward a region in contact with the second coil guide portion.

[0014] The first base portion may be formed in a wing shape with the main body portion as a reference, and the second base portion may be formed in a wing shape with the main body portion as a reference.

[0015] The first base portion is formed with at least one coil guide groove formed from the outer side toward the inner side.

[0016] The first base portion, the second base portion, and the main body portion may be an integrated structure.

[0017] The inductor may further include a connection member formed on a side surface of the first base portion to protrude outward.

[0018] The inductor further includes an insulating member formed to surround the coil wound around the main body and the main body.

[0019] The inductor may further include a core portion consisting of a first core disposed on a portion of the body portion and a second core disposed on another portion of the body portion.

[0020] The length of the first base portion in the first direction may be greater than the length of the first coil guide portion in the first direction, and the length of the second base portion in the first direction may be greater than the length of the first coil guide portion in the first direction.

[0021] According to another embodiment, an inductor includes: a pair of first base portions; a pair of second base portions formed at positions spaced apart from and facing the pair of first base portions; a skeleton portion formed between the first base portions and the second base portions and composed of a main body portion, the main body portion including a core insertion hole extending through an upper portion and a lower portion and including a first coil guide portion and a second coil guide portion protrudingly formed along respective edges of the upper portion and the lower portion; and a connecting component formed protruding outward on a side surface of the first base portion.

[0022] A coil may be wound around the outer surface of the main body.

[0023] The coil may be wound around sides of the first coil guide and the second coil guide.

[0024] The first base portion may be formed to protrude from both sides of a portion of the first coil guide portion.

[0025] The second base portion may be formed to protrude from both sides of a portion of the second coil guide portion.

[0026] Beneficial effects

[0027] According to an embodiment of the present disclosure, the first coil guide portion and the second coil guide portion only retain a minimum area for fixing the wound coil, thereby maximizing the winding space of the coil to wind more coils while preventing the coil from protruding to the outside of the upper and lower sides.

[0028] Furthermore, according to an embodiment of the present disclosure, the upper portion of the first coil guide portion is coupled to the first base portion, while the upper portion of the second coil guide portion is coupled to the second base portion, thereby enhancing the rigidity of the entire frame portion including the first and second base portions.

[0029] Furthermore, according to the embodiment of the present disclosure, by removing a portion of the upper and lower portions of the base portion to form an open structure, heat generated in the coil can be effectively released, thereby providing an inductor having improved heat dissipation performance.

[0030] Furthermore, according to the embodiments of the present disclosure, by reducing the size of the base portion, the size of the core portion can also be reduced, thereby reducing the cost of the inductor. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 FIG. 1 is a diagram showing the overall structure of an inductor according to an embodiment.

[0032] Figure 2 FIG. 1 is an exploded perspective view of an inductor according to an embodiment.

[0033] Figure 3 FIG. 1 is a diagram for explaining a state in which a coil is wound around a bobbin according to an embodiment.

[0034] Figure 4 FIG. 1 is a side view of a skeleton portion according to an embodiment.

[0035] Figure 5a and Figure 5b FIG. 1 is a partial cross-sectional view for explaining a skeleton portion according to an embodiment.

[0036] Figure 6 and Figure 7 This is a diagram for explaining a state where an insulating member is wound around a frame portion according to an embodiment.

[0037] [Description of Reference Numerals]

[0038] 100: Inductor 110: Frame

[0039] 111: First base portion 111-1, 111-2: Coil guide groove

[0040] 113: Second base portion 113-1: Substrate support groove

[0041] 115: Main body 115-1: Main body

[0042] 115-2: First coil guide 115-3: Second coil guide

[0043] 115-4: Core insertion hole 120: Connecting part

[0044] 130: core 131: first core

[0045] 133: Second core 140: Coil guide groove

[0046] 150: Insulation parts DETAILED DESCRIPTION

[0047] The following describes specific embodiments of the present invention with reference to the accompanying drawings. The following detailed description is provided to facilitate a comprehensive understanding of the methods, devices, and / or systems described herein. However, this description is provided for illustrative purposes only and is not intended to limit the present invention.

[0048] In the process of describing the embodiments of the present invention, if it is believed that the specific description of the known technology related to the present invention will confuse the main purpose of the present invention, its detailed description will be omitted. In addition, the terms described below are terms defined in consideration of the functions in the present invention, which may be different according to the intentions or conventions of the user or operator. Therefore, the definition should be determined based on the content throughout this specification. The terms used in the detailed description are only used to describe the embodiments of the present invention and are not used to limit the present invention. Unless otherwise clearly used, the singular expression includes the meaning of the plural form. In this specification, expressions such as "including" or "having" should be understood to be used to point out a certain feature, value, step, action, constituent element, a part thereof or a combination thereof, rather than to point out the existence or additional functions of one or more other features, values, steps, actions, constituent elements, a part thereof or a combination thereof that are excluded from the description in advance.

[0049] In addition, the use of directional terms such as upper, lower, one side, and the other side is related to the orientation of the disclosed drawings. The components of the embodiments of the present invention can be positioned in various orientations, so the use of directional terms is intended to be illustrative and not limiting.

[0050] Furthermore, terms such as "first" and "second" may be used to describe various components, but the components are not limited by these terms. The purpose of using these terms is to distinguish one component from another. For example, the first component may be named the second component, and conversely, the second component may be named the first component without exceeding the scope of the present invention.

[0051] Figure 1 is a diagram showing the overall structure of an inductor according to an embodiment. Figure 2 is an overall exploded perspective view of an inductor according to an embodiment, Figure 3 This is a diagram for explaining a state in which a coil guide groove is wound on a frame portion according to an embodiment. Figure 4 is a side view of a skeleton portion according to an embodiment, Figure 5a and Figure 5b is a partial cross-sectional view for illustrating a skeleton portion according to an embodiment, Figure 6 and Figure 7 This is a diagram for explaining a state where an insulating member is wound around a frame portion according to an embodiment.

[0052] Reference Figure 1 The inductor 100 includes a skeleton portion 110 , a connecting component 120 and a core portion 130 .

[0053] like Figure 2 and Figure 3 As shown, the skeleton portion 110 includes a first base portion 111 , a second base portion 113 and a main body portion 115 .

[0054] Specifically, the skeleton portion 110 is composed of a pair of first base portions 111, a pair of second base portions 113 formed at a position separated from and facing the pair of first base portions 111, and a main body portion 115, the main body portion 115 having a core insertion hole 115-4 passing through the upper and lower portions, and including a first coil guide portion 115-2 and a second coil guide portion 115-3 protrudingly formed along each edge of the upper and lower portions.

[0055] The main body 115 may be formed between the first base 111 and the second base 113. A coil 140 may be wound around the outside of the main body 115. The coil 140 may be wound around the sides of the first coil guide 115-2 and the second coil guide 115-3.

[0056] Specifically, refer to Figure 3 The main body 115 may be composed of a body 115 - 1 , a first coil guide portion 115 - 2 and a second coil guide portion 115 - 3 .

[0057] The body 115-1 has a core insertion hole 115-4 extending through the upper and lower portions, and the outer surface of the core insertion hole 115-4 may be wound with the coil 140. For example, the horizontal thickness of the body 115-1 may be approximately 0.8 mm.

[0058] The first coil guide portion 115 - 2 may be protrudingly formed along a portion of an edge of the body 115 - 1 .

[0059] Reference Figure 2, the length D1 of the first base portion 111 in the first direction may be greater than the length D2 of the first coil guide portion 115-2 in the first direction. In addition, the length D3 of the second base portion 113 in the first direction may be greater than the length D2 of the first coil guide portion 115-2 in the first direction. The length of the first base portion in the first direction may be the length of D1, the length of the first coil guide portion in the first direction may be the length of D2, and the length of the second base portion in the first direction may be the length of D3. The second coil guide portion 115-3 may be formed protrudingly along another portion of the edge of the body 115-1. Refer to Figure 2 , the length D1 of the first base portion 111 in the first direction may be greater than the length of the second coil guide portion 115-3 in the first direction (not shown). Furthermore, the length D3 of the second base portion 113 in the first direction may be greater than the length of the second coil guide portion 115-3 in the first direction. In this case, the length of the second coil guide portion in the first direction may refer to the width of an area that may protrude along the edge of another portion of the body 115-1 (the width of the area based on the same direction as D2).

[0060] For example, the first coil guide portion 115-2 and the second coil guide portion 115-3 may each have a reference width in the outer direction of 1 mm or more, based on the main body 115. That is, the first coil guide portion 115-2 and the second coil guide portion 115-3 may each be formed to protrude by 1 mm or more from the main body 115.

[0061] Reference Figure 2 and Figure 4 The first coil guide portion 115 - 2 and the second coil guide portion 115 - 3 face each other and are spaced apart. A space S for winding the coil 140 is formed along the side periphery of the body 115 - 1 based on the horizontal direction.

[0062] The first coil guide 115-2 and the second coil guide 115-3 are structures that protrude horizontally from the body 115-1, respectively, and can fix the coil 140 wound around the side of the body 115-1 at the upper and lower portions. As a result, the embodiments of the present disclosure can prevent the coil 140 from protruding beyond the upper and lower portions when wound around the side of the body 115-1, thereby facilitating the winding of the coil 140.

[0063] The coil 140 of the disclosed embodiment can function as a current sensor. The disclosed inductor can be, but is not limited to, a power factor correction (PFC) type. Furthermore, depending on the type of inductor 100, the coil 140 can also utilize more than one pair of coils L1 and L2 simultaneously to improve magnetic properties.

[0064] The body portion 115 may be formed of an insulating material.

[0065] The main body 115 may be in the shape of a square tube or a cylinder, but is not limited thereto. It may be in various shapes as long as the outer peripheral surface can be wound around the coil 140 .

[0066] Compared with a general flange structure, the first base portion 111 and the second base portion 113 according to the embodiment of the present disclosure can adopt a partially open structure, which will be described in detail later.

[0067] The first seating portions 111 may be formed in pairs.

[0068] Reference Figure 3 Compared with the flange of a general frame part, the first base part 111 can be an open structure that only retains a minimum area for winding the coil 140.

[0069] Specifically, the first base portion 111 can be formed to protrude from a portion of the first coil guide portion 115-2 on both sides. The pair of first base portions 111a and 111b can each be formed into a wing-like shape with the main body 115 as a reference. In the embodiments of the present disclosure, the wing-like shape of the first base portions 111a and 111b can be formed to protrude from both sides of the main body 115, facing each other, and having any area capable of supporting the coil 140 wound around the main body 115. The protruding area of the first base portions 111a and 111b can be determined based on the winding amount of the coil 140.

[0070] The first base portions 111a and 111b are formed on a portion of the first coil guide portion 115-2, and serve to increase rigidity by thickening both sides of the first coil guide portion 115-2 in contact therewith.

[0071] Furthermore, the structure of the first base portions 111a and 111b partially omits the portion that functions as a flange. Compared to conventional flange structures, this reduced area provides more space for winding coils 140, allowing for the winding of more coils 140. Furthermore, by reducing the size of the first base portions 111a and 111b, the size of the core portion 130 is also reduced, thereby potentially reducing the overall size of the inductor 100.

[0072] Furthermore, according to one embodiment, the first base portions 111 a and 111 b are open structures, so that the heat generated in the coil 140 can be effectively released through the open areas, thereby improving the heat dissipation effect.

[0073] Reference Figure 1The first base portion 111 may have an edge barrier 119. The edge barrier 119 may be formed to protrude upward along the edge of the exposed area E1 on one side of the first base portion 111. In this case, the exposed area may refer to an area on one side of the first base portion 111 where the core 130 is not disposed.

[0074] The first base portion 111 may have at least one coil guide groove 111 - 1 or 111 - 2 formed from the outside to the inside.

[0075] Reference Figure 2 The first base portion 111a may define the side adjacent to the main body portion 115 as the first side, the side facing the first side as the third side, the side clockwise from the first side as the second side, and the side facing the second side as the fourth side. In this case, the first base portion 111a may be formed with a first coil guide groove 111-1 formed inward from the third side, and second coil guide grooves 111-2 formed inward from the second and fourth sides, respectively.

[0076] Reference Figure 2 The first base portion 111b may define the side adjacent to the main body portion 115 as the third side, the side facing the third side as the first side, the side clockwise from the third side as the second side, and the side facing the second side as the fourth side. In this case, the first base portion 111b may be formed with a first coil guide groove 111-1 formed inward from the first side, and second coil guide grooves 111-2 formed inward from the second and fourth sides, respectively.

[0077] The first coil guide groove 111-1 and the second coil guide groove 111-2 can play a guiding role so that the two side portions of the coil 140 remaining after winding can extend outward. In addition, the depth of the first coil guide groove 111-1 and the second coil guide groove 111-2 depends on the needs of the operator.

[0078] For example, refer to Figure 6 One side of the coil 140 wound around the main body 115 may pass through the first coil guide groove 111-1 formed on the first side surface and extend to the outside through the second coil guide groove 111-2 formed on the second side surface. The other side of the coil 140 wound around the main body 115 may pass through the first coil guide groove 111-1 formed on the first side surface and extend to the outside through the second coil guide groove 111-2 formed on the fourth side surface.

[0079] The first base portion 111 may be formed of an insulating material.

[0080] The second base portions 113 may be formed in pair at positions spaced apart from and facing the pair of first base portions 111. The second base portions 113 may be formed so as to protrude from both sides of a portion of the second coil guide portion 115-3.

[0081] Reference Figure 3 At least one substrate supporting groove 113 - 1 is formed in a corner area of a portion of the second base portion 113 .

[0082] Specifically, each of the pair of second base portions 113a and 113b may have a substrate support groove 113-1 formed in a corner region on the main body portion 115 side of a portion thereof. For example, the second base portion denoted by reference numeral 113a may have two substrate support grooves 113-1 formed in a corner region of a portion of its surface adjacent to the main body portion 115. The second base portion denoted by reference numeral 113b may have two substrate support grooves 113-1 formed in a corner region of a portion of its surface adjacent to the main body portion 115. In the embodiment of the present disclosure, since the substrate support grooves 113-1 are formed in the second base portion 113, the PCB can be securely mounted on the lower portion of the inductor 100 without the need for a separate PCB mounting portion, thereby reducing the number of steps and costs.

[0083] Reference Figure 3 , each of a pair of second base portions 113a, 113b can be formed into a wing shape based on the main body portion 115. The wing-shaped forms of the second base portions 113a, 113b are formed facing each other and protrudingly on both sides of the other part of the main body portion based on the main body portion 115, and can be formed with any area in order to support the coil 140 wound on the main body portion 115. In the embodiment of the present disclosure, a pair of second base portions 113a, 113b are formed into a wing shape, and compared to a general flange structure, an open structure can be formed, which only retains the simplest structure for obtaining space for winding the coil 140 and preventing protrusions to the upper and lower parts. At this time, the protruding area of the second base portions 113a, 113b may depend on the winding amount of the coil 140. As Figure 3 As shown, the second base portions 113a and 113b may be formed in a semi-elliptical shape, but are not limited thereto.

[0084] The second base portion 113 may be formed of an insulating material.

[0085] Reference Figure 4 The second base portions 113a and 113b may be configured such that their thickness gradually increases from the outer side BH1 to the area BH2 in contact with the second coil guide portion 115-3. This structure not only enhances the rigidity of the second base portions 113a and 113b themselves, but also enhances the rigidity of the second coil guide portion 115-3 formed by contact with the second base portions 113a and 113b.

[0086] The first base portion 111, the second base portion 113 and the main body portion 115 may be an integrated structure. Figure 4 In the embodiment of the present disclosure, a space S for winding the coil 140 may be formed between the first coil guide portion 115-2 and the second coil guide portion 115-3 of the main body portion 115, and between the first base portion 111 and the second base portion 113. In this case, the height between the first coil guide portion 115-2 and the second coil guide portion 115-3 may be H1, and the height between the first base portion 111 and the second base portion 113 may be H2.

[0087] In the embodiment of the present disclosure, the space within the separation space S based on the vertical direction is a structure that gradually expands from the inside to the outside. Compared with the structure of a general frame portion, a further area for winding the coil 140 can be obtained.

[0088] Specifically, in an embodiment of the present disclosure, based on the space between the first coil guide portion 115-2 and the second coil guide portion 115-3 and the first base portion 111 and the second base portion 113 extending horizontally from the first coil guide portion 115-2 and the second coil guide portion 115-3, an area in which the coil can be wound can be further obtained.

[0089] Figure 5a yes Figure 3 The cross-sectional view based on CS1, Figure 5b yes Figure 3 Cross-sectional view based on CS2.

[0090] Reference Figure 5b First, the first coil guide 115-2 and the second coil guide 115-3 fix the coil 140 wound on the main body 115 at the upper and lower parts. Figure 5a , then the first base portion 111 and the second base portion 113 fix the coil 140 at the upper and lower parts, but are not limited thereto. The embodiment of the present disclosure can wind more coils through the above structure while preventing the coil 140 from protruding (overshooting) to the outside of the upper and lower sides in advance.

[0091] The connecting member 120 may be formed on the side surface of the first base portion 111 so as to protrude outward. Figures 1 to 7 In the figure, four connecting components 120 are shown, but the present invention is not limited thereto. A connecting component 120 may be formed on each side of the first base portion 110. In other words, at least two connecting components 120 may be formed. The connecting components 120 may be bent toward the main body portion 115. In this case, the connecting components 120 are not limited to being bent toward the main body portion 115, but may also be bent in the opposite direction relative to the main body portion 115.

[0092] The core portion 130 may be composed of a first core 131 disposed on a portion of the body portion 115 and a second core 133 disposed on another portion of the body portion 115. The first core 131 and the second core 133 may form an "E" shape, but are not limited thereto.

[0093] Reference Figure 2 The first core 131 may be formed in a form of being seated on a portion of the body portion 115 , and may be formed in a form of having a portion 131 - 1 inserted into the core insertion hole 115 - 4 .

[0094] The second core 133 may be formed in a form of being seated in another portion of the body portion 115 , and may be formed in a form of having a portion 133 - 1 inserted into the core insertion hole 115 - 4 .

[0095] The first core 131 and the second core 133 are described as being formed in an EE shape, with portions thereof respectively inserted into the core insertion hole 115-4. However, the present invention is not limited thereto, and the first core 131 and the second core 133 may also be formed in various other shapes, such as an EI shape, an EVD shape, an EED shape, an EP shape, an EEH shape, etc. Depending on the shape of the core portion 130, a portion of at least one of the first core 131 and the second core 133 may be inserted into the core insertion hole 115-4.

[0096] The core 130 of the disclosed embodiment omits a portion of the first and second base portions 111, 113 that functions as a flange. This reduces the size of the core 130 compared to a structure employing flanges, thereby also reducing the overall size of the inductor 100. Furthermore, the inductor 100 of the disclosed embodiment omits a portion of the first and second base portions 111, 113 that functions as a flange, thereby increasing the space available for winding coils and, therefore, enabling the winding of more coils.

[0097] In addition, refer to Figure 6 and Figure 7 The inductor 100 may further include an insulating member 150 formed to wrap the coil 140 wound around the main body 115 and the main body 115. The insulating member may be a tape member.

[0098] While representative embodiments of the present invention have been described in detail above, it should be apparent to those skilled in the art that various modifications may be made to the embodiments without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the embodiments described above, but should be defined by the following claims and their equivalents.

Claims

1. An inductor, characterized in that: include: a pair of first base portions; a pair of second base portions formed at positions spaced apart from and facing the pair of first base portions; as well as A skeleton portion is formed between the first base portion and the second base portion and is composed of a main body portion, wherein the main body portion includes a body having a core insertion hole passing through the upper and lower portions and a coil wound on the outside, a first coil guide portion protruding along the upper edge, and a second coil guide portion protruding along the lower edge.

2. The inductor according to claim 1, wherein The first base portion is formed to protrude from both sides of a portion of the first coil guide portion.

3. The inductor according to claim 2, wherein: The second base portion is formed to protrude from both sides of a portion of the second coil guide portion.

4. The inductor according to claim 3, wherein At least one substrate supporting groove is formed in a corner region of a portion of the second base portion.

5. The inductor according to claim 3, wherein The second base portion is formed in a structure in which the thickness thereof gradually increases from the outer side toward a region in contact with the second coil guide portion.

6. The inductor according to claim 3, wherein The first base portions are each formed in a wing shape with the main body portion as a reference, and the second base portions are each formed in a wing shape with the main body portion as a reference.

7. The inductor according to claim 2, wherein: The first base portion is formed with at least one coil guide groove formed from the outer side toward the inner side.

8. The inductor according to claim 1, wherein The first base portion, the second base portion and the main body portion are an integrated structure.

9. The inductor according to claim 1, wherein The invention further includes a connecting member formed on a side surface of the first base portion so as to protrude outward.

10. The inductor according to claim 1, wherein The invention further includes a core portion composed of a first core disposed on a portion of the main body portion and a second core disposed on another portion of the main body portion.

11. The inductor according to claim 1, wherein The length of the first base portion in the first direction is greater than the length of the first coil guide portion in the first direction, and the length of the second base portion in the first direction is greater than the length of the first coil guide portion in the first direction.

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