Miniaturized rewinding vertical mode inductor

Abstract

The utility model discloses a miniaturized rewinding standing type inductor which comprises a first magnetic core, the first magnetic core is composed of a left side body, a bottom side body and a right side body, the lower ends of the left side body and the right side body are respectively perpendicular to the two ends of the bottom side body, and a U-shaped magnetic core with a cavity in the middle is formed; the second magnetic core is composed of a flat plate body and a cylindrical body, and the cylindrical body is perpendicular to the front side face of the flat plate body to form a T-shaped magnetic core; and the coil is a sheet-shaped conductor and comprises horizontal electrode connecting parts on two sides and a convex bending part in the middle, and the whole coil is shaped like a Chinese character'ji '. The cylindrical body of the second magnetic core is inserted into the cavity of the first magnetic core to form a UT-shaped buckle, gaps for placing the coil are formed between the two side walls of the cylindrical body and the inner wall of the cavity, the convex bent part of the coil is buckled on the cylindrical body of the second magnetic core, and the electrode connecting parts on the two sides of the coil abut against the bottom of the left side body and the bottom of the right side body of the first magnetic core respectively. According to the scheme, the problem that an existing E-shaped magnetic core which is large in gap depth and small in width is difficult to machine is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of inductors, and particularly relates to a miniaturized winding and standing type inductor. Background Art

[0002] An inductor is a passive electronic component that can store electrical energy in the form of magnetic flux, and will generate an electromotive force due to the change of the passing current, thereby resisting the change of the current. Inductors can have functions such as filtering and oscillation in a circuit, as well as functions such as electromagnetic wave interference, electromagnetic radiation shielding, and filtering noise in the current. They are widely used in products such as power supplies, monitors, switches, motherboards, scanners, telephones, and modems. An inductor usually consists of two magnetic cores buckled together, and one of the magnetic cores is provided with a channel position for arranging a coil. Common magnetic core buckles include the so-called EE type or EI type in the industry, that is, an EE type structure magnetic core formed by splicing two E-type magnetic cores left and right, or splicing an E-type magnetic core and an I-type magnetic core. A coil is arranged on the E-type magnetic core. However, for the existing lead type coil, its width is relatively wide and its thickness is relatively thin, resulting in a relatively deep depth and a relatively small width of the placement gap A of the E-type magnetic core, which is prone to tool breakage during the production of the magnetic core and has a large processing difficulty (as Figure 1 shown). Therefore, relevant personnel in this technical field have carried out further research and design, and proposed a new magnetic core structure scheme to solve the above problems. Content of the Utility Model

[0003] In view of this, the utility model proposes a miniaturized winding and standing type inductor. The inductor designs a U-shaped magnetic core and a T-shaped magnetic core, and solves the problem that it is not easy to process the placement slot of the magnetic core structure for an inductor with a coil lead of a certain width.

[0004] The technical solution disclosed by the utility model, a miniaturized winding and standing type inductor, includes:

[0005] A first magnetic core, the first magnetic core is composed of a left side body, a bottom side body and a right side body. The lower ends of the left side body and the right side body are respectively perpendicular to both ends of the bottom side body, forming a U-shaped magnetic core with a cavity in the middle;

[0006] A second magnetic core, the second magnetic core is composed of a flat plate body and a cylindrical body. The cylindrical body is perpendicular to the front side of the flat plate body, forming a T-shaped magnetic core;

[0007] A coil, the coil is a sheet conductor, including electrode connection parts with horizontal sides on both sides and a convex bending part in the middle, forming a "ji" shape as a whole;

[0008] The cylindrical body of the second magnetic core is inserted into the cavity of the first magnetic core to form a UT-type interlock. The two side walls of the cylindrical body and the inner wall of the cavity form a gap for placing the coil. The protruding and bent part of the coil is interlocked with the cylindrical body of the second magnetic core. The electrode connection parts on both sides of the coil are respectively interlocked with the bottom of the left and right sides of the first magnetic core.

[0009] Furthermore, the left side, bottom side and right side of the first magnetic core are integrally formed, and the cross-section of the first magnetic core along the horizontal direction is "U" shaped. The flat plate and cylindrical body of the second magnetic core are integrally formed, and the cylindrical body has a square column structure. The first magnetic core and the second magnetic core are interlocked to form a cube.

[0010] Furthermore, the coil is integrally stamped from a copper sheet, and a thin metal film is electroplated on the surface of the coil.

[0011] Furthermore, the width of the electrode connection portions on both sides of the coil extending to both sides is less than or equal to the bottom width of the left and right sides of the first magnetic core.

[0012] Furthermore, the side of the cylindrical body corresponding to the coil's protruding bend is configured to form a recessed surface with the flat plate and the first magnetic core. After the coil is fastened to the cylindrical body and the first and second magnetic cores and assembled together, the top surface of the coil's protruding bend is flush with the top surface of the flat plate and the first magnetic core.

[0013] Furthermore, a cover plate is bonded to the top surface of the protruding bent portion of the coil and the top surface of the flat plate of the first magnetic core and the second magnetic core. The cover plate is made of plastic or epoxy resin.

[0014] Furthermore, the first magnetic core and the second magnetic core are interlocked, with the cylindrical body of the second magnetic core abutting against the bottom wall of the cavity of the first magnetic core and being glued together, and the flat body of the second magnetic core abutting against the front ends of the left and right sides of the first magnetic core and being glued together, so as to realize the connection between the first magnetic core and the second magnetic core.

[0015] The beneficial effects of the miniaturized, wound vertical inductor provided in this application are as follows: By designing a U-shaped first magnetic core and a T-shaped second magnetic core, with the two cores interlocking in a U-shape, the cylindrical body of the second magnetic core is inserted into the cavity of the first magnetic core. The two side walls of the cylindrical body and the inner wall of the cavity form a gap for placing the coil, creating a gap for the coil formed by splicing the two magnetic cores. This avoids the problem of machining a deep and narrow gap on a single magnetic core, which would otherwise be difficult. This solution simplifies the integrated processing of the first and second magnetic cores. Furthermore, the coil is assembled with the second magnetic core and then with the first magnetic core, resulting in simple assembly and a high degree of automation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the difficult-to-machine coil gap structure of an existing E-type magnetic core.

[0017] Figure 2 This is an exploded view of the overall structure of an embodiment of the present invention.

[0018] Figure 3 This is an exploded view of the overall structure of one embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram of a coil assembled on a cylindrical body of a second magnetic core according to an embodiment of the present invention.

[0020] Figure 5 This is a perspective view of the overall structure of an embodiment of the present utility model.

[0021] Figure 6 This is a perspective view of the overall structure of one embodiment of the present invention.

[0022] Figure 7 This is a schematic diagram of the gap in which the coil is placed according to an embodiment of the present invention.

[0023] Figure 8 This is a schematic diagram of the cylindrical body forming the sunken surface of the second magnetic core in one embodiment of the present invention.

[0024] Figure 9 This is a schematic diagram showing an embodiment of the present invention with a cover plate. Detailed Implementation

[0025] The technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this disclosure.

[0026] It should be noted that the directional terms such as left, right, up, and down in the embodiments of this application are only relative concepts or are based on the normal use state of the product, and should not be considered as restrictive.

[0027] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "rear end", "front end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0028] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and intended to explain the present application, and should not be construed as a limitation to the present application.

[0029] An embodiment of the present application provides a miniaturized winding and standing type inductor.

[0030] Please refer to Figures 2 to 7 , in one embodiment, the miniaturized winding and standing type inductor includes a first magnetic core 1, the first magnetic core 1 is composed of a left side body 11, a bottom side body 13 and a right side body 12. The lower ends of the left side body 11 and the right side body 12 are respectively perpendicular to the two ends of the bottom side body 13, forming a U-shaped magnetic core with a cavity in the middle; a second magnetic core 2, the second magnetic core 2 is composed of a flat plate body 22 and a cylindrical body 21. The cylindrical body 21 is perpendicular to the front side of the flat plate body 22, forming a T-shaped magnetic core; a coil 3, the coil 3 is a sheet conductor, including electrode connection parts 31 with horizontal sides on both sides and a convex bending part 32 in the middle, forming a "Ji" shape as a whole.

[0031] Refer to Figures 4 to 7 , the cylindrical body 21 of the second magnetic core 2 is inserted into the cavity of the first magnetic core 1 to form a UT-shaped snap-on. The two side walls of the cylindrical body 21 and the inner wall of the cavity form a gap B for placing the coil 3. The convex bending part 32 of the coil 3 is buckled on the cylindrical body 21 of the second magnetic core 2, and the electrode connection parts 31 on both sides of the coil 3 are respectively buckled on the bottoms of the left side body 11 and the right side body 12 of the first magnetic core 1.

[0032] By designing the U-shaped first magnetic core 1 and the T-shaped second magnetic core 2, and the UT-shaped snap-on, that is, the cylindrical body 21 of the second magnetic core 2 is inserted into the cavity of the first magnetic core 1, and the two side walls of the cylindrical body 21 and the inner wall of the cavity form a gap B for placing the coil 3, a placement gap B for the coil formed by splicing two magnetic cores is formed, avoiding the problem of large processing difficulty of machining a gap with a relatively deep depth and a small width on one magnetic core. The integrated processing of the first magnetic core 1 and the second magnetic core 2 realized by this solution is simplified, and at the same time, the coil 3 is assembled with the second magnetic core 2 and then assembled with the first magnetic core 1, with simple assembly and high automation.

[0033] Preferably, in this embodiment, the left side body 11, the bottom side body 13 and the right side body 12 of the first magnetic core 1 are integrally formed. The cross-section of the first magnetic core 1 as a whole is "concave" shaped in the horizontal direction. The flat plate body 22 and the cylindrical body 21 of the second magnetic core 2 are integrally formed. The cylindrical body 21 is in a square column structure. The first magnetic core 1 and the second magnetic core 2 are snap-on to form a cube. In addition, the manufacturing materials of the first magnetic core 1 and the second magnetic core 2 can be but are not limited to metal powder, ferrite powder, etc., as long as they are materials suitable for manufacturing magnetic cores.

[0034] Preferably, in this embodiment, the coil 3 is integrally stamped from a copper sheet, and a thin metal film is electroplated on the surface of the coil 3. The electroplated metal film serves to resist oxidation and prevent rusting of the coil 3, which is beneficial for surface mount soldering.

[0035] Furthermore, refer to Figure 6 The width of the electrode connection portions 31 extending to both sides of the coil 3 is less than or equal to the bottom width of the left body 11 and the right body 12 of the first magnetic core 1. The electrode connection portions 31 should not exceed the bottom width of the left body 11 and the right body 12, which saves materials and is also aesthetically pleasing.

[0036] Reference Figure 8 In one embodiment, the side of the cylindrical body 21 that is fastened to the protruding bent portion 32 of the coil 3 is configured to form a recessed surface C with the flat plate 22 and the first magnetic core 1. After the coil 3 is fastened to the cylindrical body 21 and the first magnetic core 1 and the second magnetic core 2 are fastened together, the top surface of the protruding bent portion 32 of the coil 3 is flush with the top surface of the flat plate 22 and the first magnetic core 1, so as to achieve a flat overall top surface, which is beneficial to the packaging of thin products.

[0037] Reference Figure 9 Furthermore, a cover plate 4 is adhered to the top surface of the protruding bent portion 32 of the coil 3 and the top surface of the flat plate 22 of the first magnetic core 1 and the second magnetic core 2. The cover plate 4 is made of plastic or epoxy resin. It can be understood that adhering to the cover plate 4 further improves the convenience of inductor surface mount installation; that is, in the subsequent inductor surface mount process, the suction cup of the gripping device can directly adsorb the upper surface of the cover plate 4 to complete the gripping of the inductor. Without the cover plate 4, the gap B of the inductor would have an air gap, preventing the suction cup from adsorbing it.

[0038] In the above embodiment, the first magnetic core 1 and the second magnetic core 2 are fastened together. The cylindrical body 21 of the second magnetic core 2 abuts against the bottom wall of the cavity of the first magnetic core 1 and is glued together. The flat body 22 of the second magnetic core 2 abuts against the front end faces of the left body 11 and the right body 12 of the first magnetic core 1 and is glued together, so as to realize the connection between the first magnetic core 1 and the second magnetic core 2.

[0039] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A miniaturized wound vertical inductor, characterized in that, Comprising: A first magnetic core (1), the first magnetic core (1) being composed of a left side body (11), a bottom side body (13) and a right side body (12), the lower ends of the left side body (11) and the right side body (12) being perpendicular to the two ends of the bottom side body (13) respectively, forming a U-shaped magnetic core with a cavity in the middle; A second magnetic core (2), the second magnetic core (2) being composed of a flat plate body (22) and a cylindrical body (21), the cylindrical body (21) being perpendicular to the front side of the flat plate body (22), forming a T-shaped magnetic core; A coil (3), the coil (3) being a sheet conductor, including electrode connection parts (31) with horizontal sides on both sides and a convex bent part (32) in the middle, forming a "ji" shape as a whole; Wherein, the cylindrical body (21) of the second magnetic core (2) is inserted into the cavity of the first magnetic core (1) to form a UT-shaped snap fit, and gaps (B) for arranging the coil (3) are formed between the two side walls of the cylindrical body (21) and the inner wall of the cavity. The convex bent part (32) of the coil (3) is buckled on the cylindrical body (21) of the second magnetic core (2), and the electrode connection parts (31) on both sides of the coil (3) are respectively abutted against the bottoms of the left side body (11) and the right side body (12) of the first magnetic core (1).

2. The miniaturized wound vertical inductor according to claim 1, characterized in that, The left side body (11), the bottom side body (13) and the right side body (12) of the first magnetic core (1) are integrally formed. The cross-section of the first magnetic core (1) as a whole is "concave" in the horizontal direction. The flat plate body (22) and the cylindrical body (21) of the second magnetic core (2) are integrally formed, and the cylindrical body (21) has a square column structure. The first magnetic core (1) and the second magnetic core (2) are snap-fitted to form a cube.

3. The miniaturized wound vertical inductor according to claim 1, characterized in that, The coil (3) is integrally formed by stamping a copper sheet, and a metal thin film is electroplated on the surface of the coil (3).

4. The miniaturized wound vertical inductor according to claim 1, characterized in that, The widths of the electrode connection parts (31) on both sides of the coil (3) extending to both sides are less than or equal to the bottom widths of the left side body (11) and the right side body (12) of the first magnetic core (1).

5. The miniaturized wound vertical inductor according to claim 2, characterized in that, The side surface of the cylindrical body (21) corresponding to the buckling of the convex bent part (32) of the coil (3) is set to form a sunken surface (C) with the flat plate body (22) and the first magnetic core (1). After the coil (3) is buckled on the cylindrical body (21), and the first magnetic core (1) and the second magnetic core (2) are snap-fitted and assembled, the top surface of the convex bent part (32) of the coil (3) is flush with the top surfaces of the flat plate body (22) and the first magnetic core (1).

6. The miniaturized wound vertical inductor according to claim 5, characterized in that, A cover plate (4) is bonded on the top surface of the convex bent part (32) of the coil (3), and the top surfaces of the flat plate body (22) of the first magnetic core (1) and the second magnetic core (2). The cover plate (4) is made of plastic or epoxy resin.

7. The miniaturized wound vertical inductor according to any one of claims 1-6, characterized in that, The first magnetic core (1) and the second magnetic core (2) are snap-fitted. The cylindrical body (21) of the second magnetic core (2) abuts against the bottom wall of the cavity of the first magnetic core (1) and is adhesively bonded, and the flat plate body (22) of the second magnetic core (2) abuts against the front end surfaces of the left side body (11) and the right side body (12) of the first magnetic core (1) and is adhesively bonded to realize the connection between the first magnetic core (1) and the second magnetic core (2).

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