Combined magnetic inductor with adjustment of electromagnetic effect

Abstract

The utility model provides a kind of combined magnetic inductor with adjusting electromagnetic effect, include inner metal sheet, outer metal sheet, group symmetry's magnetic outer cover and granular insulating glue;Inner metal sheet is the frame type metal sheet with paint layer on outer surface, bottom is open, and the bottom of both ends is bent inward and extends a conducting end respectively;Outer metal sheet is a frame type metal sheet, bottom is open, and the bottom of both ends is bent outward and extends a conducting end respectively;Magnetic outer cover is correspondingly provided with slot hole for the superposition of outer metal sheet and inner metal sheet, and the slot hole is inserted;The assembly of inductor is that inner metal sheet is placed in the inner edge of the frame of outer metal sheet and superimposed, and superimposed outer metal sheet and inner metal sheet are placed in the slot hole of one of magnetic outer cover, and granular insulating glue is glued in the paint layer damage area of inner metal sheet, so that insulation and gap are generated between inner metal sheet, outer metal sheet and magnetic outer cover, and another magnetic outer cover is covered after adding adhesive glue, to form combined magnetic inductor with adjusting electromagnetic effect.

Description

Technical Field

[0001] This utility model relates to a combined magnetic inductor with adjustable electromagnetic effect, and more particularly to a combined magnetic inductor that reduces component gaps and adjusts electromagnetic effect. Background Technology

[0002] As is known, traditional magnetic components or inductors use a toroidal iron core with one or more sets of copper wires wound around it, so that a magnetic field is generated when current passes through it and changes the current and voltage values. However, in order to overcome the winding problem of traditional magnetic components, the industry has gradually improved and adopted combined cylindrical magnetic inductors.

[0003] However, this combined cylindrical magnetic inductor product still suffers from the problem of electromagnetic interference (EMI) caused by the exposure and dissipation of magnetic field lines. Therefore, the known technology addresses this by adding a magnetic cover to the outside of the cylindrical magnetic core, commonly known as a combined magnetic core element (Drum Core). Compared to open elements, it has significantly improved the magnetic field lines within the magnetic material path and enhanced the overall magnetic field output strength. Moreover, the cover can guide the magnetic field lines into the cover material, which can significantly reduce the dissipation of magnetic field lines.

[0004] Currently widely used composite magnetic core components or magnetic inductors are mainly composed of two magnetic outer covers with pre-drilled slots on their inner edges, an outer metal sheet, an inner metal sheet, and an insulating sheet between the outer and inner metal sheets. During assembly, the insulating sheet is placed between the two copper metal sheets and the three are stacked together. Then, the three are placed in the slots on the inner edge of the magnetic outer covers and bonded together with adhesive to achieve the expected inductance performance. For related improvement technologies, please refer to the Taiwan Publication No. TW I764829, which was previously approved by the applicant in this case.

[0005] The larger the gap between the components of the aforementioned combined magnetic inductor, the more easily it will be affected by electromagnetic waves, causing vibration and noise, and thus generating greater magnetic loss.

[0006] The purpose of placing the insulating sheet between the outer and inner metal sheets in a traditional composite magnetic inductor is mainly to isolate the conductivity between the outer and inner metal sheets and to generate a magnetic force effect between the outer and inner metal sheets in the magnetic cover. Utility Model Content

[0007] In view of the obvious shortcomings of traditional combined magnetic inductors as described above, the purpose of this utility model is to provide a combined magnetic inductor with adjustable electromagnetic effect that significantly improves efficiency.

[0008] This invention provides a combined magnetic inductor with adjustable electromagnetic effect, comprising an inner metal sheet, an outer metal sheet, a set of symmetrical magnetic covers, and particulate insulating adhesive. The inner metal sheet is a frame-shaped metal sheet coated with a paint layer. The bottom of the inner metal sheet is open, and each end has a conductive end bent inwards at its bottom. At predetermined locations on the outer edge of the conductive end at the bottom of the inner metal sheet and on the flat or side surface of the vertical surface, there is a destructive effect of paint peeling or paint layer thickness reduction, resulting in exposed metal conductivity at the bottom and areas of paint layer damage. The outer metal sheet is a frame-shaped metal sheet... The bottom is open, and each end of the bottom bends outward to extend a conductive end. The corresponding magnetic outer cover has slots on its inner edge for the outer and inner metal sheets to be stacked and inserted. The inductor is assembled by placing the inner metal sheet on the inner edge of the frame of the outer metal sheet, and placing the stacked outer and inner metal sheets in the slot of one of the magnetic outer covers. Particle insulating adhesive is applied to the damaged area of ​​the paint layer of the inner metal sheet to create insulation and gap between it and the outer metal sheet and the magnetic outer cover. After adding adhesive, it is covered with another magnetic outer cover to form the combined magnetic inductor with the electromagnetic effect adjustment.

[0009] The granular insulating adhesive refers to a granular insulating adhesive made by mixing glass particles or other inorganic thermally conductive granular materials into insulating resin. The insulation coefficient and heat dissipation coefficient of the damaged area of ​​the inner metal sheet paint layer are controlled by adjusting the amount of adhesive and the adhesive material, so as to obtain magnetic inductors with different electromagnetic effect requirements.

[0010] Based on practical experience, the above-mentioned combined magnetic inductors have stricter requirements for the outer and inner metal sheets, which must have higher insulation. Low-voltage inductors, such as those below 20V, do not have high insulation requirements, and the appropriate product design can be selected according to the actual application.

[0011] According to tests, the combined magnetic inductor of this invention does indeed have the effects of reducing noise, protecting against overvoltage, and assisting in heat dissipation, and can obtain good electromagnetic effects, making it especially suitable for low-voltage inductor products.

[0012] The present invention is a combined magnetic inductor, characterized by an inner metal sheet coated with a paint layer on the outside, which is subjected to different destructive effects such as paint peeling or thinning by laser. The laser operation can be pre-controlled according to the product requirements, which is a feature not found in general combined inductors.

[0013] Another feature of this utility model's combined magnetic inductor is the application of granular insulating adhesive to areas where the inner metal sheet's paint layer has been damaged. The thickness of this granular insulating adhesive can control the gap between the inner and outer metal sheets, resulting in different resistivity coefficients. This allows for the appropriate absorption of current pulses, achieving the effect of protecting the components. The filling of the inductor's component gaps with granular insulating adhesive also effectively reduces vibration and noise problems.

[0014] In this utility model of a combined magnetic inductor, the material of the granular insulating adhesive affects the resistance characteristics between the inner and outer metal sheets. The better the electrical conductivity, the better the heat dissipation. Therefore, by designing the granular insulating adhesive, the component can have the functions of overvoltage protection and heat dissipation assistance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the process of the combined magnetic inductor of this utility model.

[0016] Figure 2 This is a schematic diagram of the components in the manufacturing process of the combined magnetic inductor of this utility model.

[0017] Figure reference numerals: 1-Flat strip metal wire; 11-Metal segment; 12-Exposed ends; 13-Area where the paint layer is damaged; 2-Inner metal sheet; 21-Conductive end; 3-Outer metal sheet; 31-Conductive end; 4-Magnetic outer cover; 41-Slot; 5-Magnetic outer cover; 51-Slot; 6-Particle insulating adhesive; E-Combined magnetic inductor; L-Laser machine; S1-Cutting a flat strip metal wire coated with paint into metal segments of appropriate length; S2-... Laser treatment destroys the paint layer on the flat surfaces or sides of the metal segment S1 at both ends and at appropriate locations between the two ends; S3 - stamping the metal segment S2 into a frame-shaped inner metal sheet; S4 - placing the inner metal sheet of S3 together with the outer metal sheet into a slot reserved on the inner edge of a magnetic outer cover; S5 - applying granular insulating adhesive to the damaged area of ​​the inner metal sheet of S4; S6 - adding adhesive to the semi-finished product S5 and covering it with another magnetic outer cover for bonding; S7 - completing the S6 assembly inductor by hot-baking and gluing. Detailed Implementation

[0018] like Figure 1 , Figure 2 As shown, the combined magnetic inductor with adjustable electromagnetic effect of this utility model can be manufactured by the following method, but is not limited thereto. The preferred manufacturing process steps are as follows:

[0019] S1 cuts the flat strip of metal with a painted coating into metal segments of appropriate length;

[0020] S2 uses a laser to destroy the paint layer on the flat or side surfaces at both ends and appropriate locations between the metal segments of S1.

[0021] S3 stamps the metal segment of S2 into a frame-shaped inner metal sheet;

[0022] S4 places the inner metal sheet of S3 along with the outer metal sheet into a slot reserved on the inner edge of a magnetic outer cover.

[0023] S5 applies granular insulating adhesive to the damaged area of ​​the inner metal sheet paint layer in S4.

[0024] S6 adds the S5 semi-finished product to the adhesive and covers it with another magnetic outer cover for bonding.

[0025] S7 is completed by hot-baking and gluing together the S6 combined inductor.

[0026] In step S1 above, the bundled flat strip metal wire 1, which is used as a metal sheet inside an inductor and has a painted surface, is cut into a plurality of metal segments 11 of appropriate lengths using a cutter.

[0027] In step S2 above, the laser machine L can destroy the paint layer on the flat surface or side surface of the metal segment 11 obtained in S1 at both ends and between the two ends at a predetermined location, thereby creating a region 13 with exposed metal ends 12 and a damaged paint layer.

[0028] In step S3 above, the metal segment 11 of S2 can be stamped into a frame-shaped inner metal sheet 2 using a punch press.

[0029] In step S4 above, the inner metal sheet 2, which has been formed in S3, together with the outer metal sheet 3, can be placed into the slot 41 reserved on the inner edge of one of the magnetic outer covers 4 to form a basic inductor assembly.

[0030] In step S5 above, particulate insulating adhesive 6 is applied to the damaged area of ​​the inner metal sheet 13 paint layer in S4 to generate appropriate insulation.

[0031] In step S6 above, the semi-finished product from S5 can be added to adhesive and covered with another magnetic outer cover 5 to form the inductor of this utility model.

[0032] In step S7 above, the inductor assembled in S6 can be completed by hot-baking and gluing, thus finally completing the magnetic inductor E with adjustable electromagnetic effect.

[0033] like Figure 2 As shown, the combined magnetic inductor E with adjustable electromagnetic effect of this utility model includes an inner metal sheet 2, an outer metal sheet 3, a set of symmetrical magnetic outer covers 4 and 5, and particulate insulating adhesive 6.

[0034] The aforementioned inner metal sheet 2 is a frame-shaped metal sheet with a paint coating on its outer surface. The bottom of the inner metal sheet 2 is open, and each of its two ends is bent inward and extends into a conductive end 21. There are pre-set locations on the outer edge of the conductive end 21 at the bottom of the inner metal sheet 2 and on the flat or side surface of the outer edge of the vertical surface, where the paint layer peels off or the paint layer thickness is reduced, so as to produce a bottom exposure 12 and a paint layer damage area 13 for metal conductivity.

[0035] The aforementioned outer metal sheet 3 is a general frame-shaped metal sheet. The bottom of the outer metal sheet 3 is open, and each of its two ends is bent outward and extends into a conductive end 31.

[0036] The corresponding magnetic outer covers 4 and 5 have slots 41 and 51 on their inner edges for the outer metal sheet 3 and the inner metal sheet 2 to be stacked and inserted.

[0037] The assembly of the aforementioned inductor element involves stacking the inner metal sheet 2 within the inner edge of the frame of the outer metal sheet 3, placing the stacked outer metal sheet 3 and inner metal sheet 2 within the slot 41 of one of the magnetic outer covers 4, applying granular insulating adhesive 6 to the damaged area 13 of the inner metal sheet 2 to create appropriate insulation and gaps between it and the outer metal sheet 3 and the magnetic outer covers 4 and 5, and then covering it with another magnetic outer cover 5 after applying adhesive, thus forming the combined magnetic inductor E with adjustable electromagnetic effect.

[0038] The granular insulating adhesive 6 refers to the granular insulating adhesive 6 made by mixing glass particles or other inorganic thermally conductive particle materials into insulating resin. The insulation coefficient and heat dissipation coefficient of the damaged area 13 of the inner metal sheet 2 can be controlled by adjusting the amount of adhesive and the material of the adhesive, so as to achieve the production of magnetic inductors with different electromagnetic effect requirements.

Claims

1. A combined magnetic inductor with adjustable electromagnetic effect, characterized in that, It includes an inner metal sheet (2), an outer metal sheet (3), a set of symmetrical magnetic outer covers (4, 5) and granular insulating adhesive (6); The aforementioned inner metal sheet (2) is a frame-shaped metal sheet with a paint coating on its outer surface. The bottom of the inner metal sheet (2) is open, and the bottom of each end is bent inward to extend a conductive end (21). There are pre-set locations on the outer edge of the conductive end (21) at the bottom of the inner metal sheet (2) and on the flat or side surface of the outer edge of the vertical surface, where the paint layer peels off or the paint layer thickness is reduced, so as to produce a bottom exposed (12) of metal conductivity and a paint layer damaged area (13). The aforementioned outer metal sheet (3) is a frame-shaped metal sheet. The bottom of the outer metal sheet (3) is open, and the bottom of each end is bent outward to extend a conductive end (31). The corresponding magnetic outer covers (4, 5) have slots (41, 51) on their inner edges for the outer metal sheet (3) and the inner metal sheet (2) to be stacked and inserted. The above-mentioned inductor is assembled by placing the inner metal sheet (2) on the inner edge of the frame of the outer metal sheet (3), and placing the stacked outer metal sheet (3) and inner metal sheet (2) in the slot (41) of one of the magnetic outer covers (4). Particle insulating adhesive (6) is applied to the damaged area (13) of the paint layer of the inner metal sheet (2) to create insulation and gap between it and the outer metal sheet (3) and the magnetic outer covers (4, 5). After adding adhesive, it is covered with another magnetic outer cover (5) to form the combined magnetic inductor (E) with the electromagnetic effect adjustment.

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