TWM512796U - Magnetic core inductor preform - Google Patents

Description

Core inductor pre-form

The present invention relates to a preform, and more particularly to a preform of a magnetic core inductor.

Current magnetic core inductors are mainly classified into thin film, multilayer, and wire wound. For example, a magnetic-core inductor (see FIG. 1) disclosed in Taiwan's TW 201440090 A early publication patent case (hereinafter referred to as the first case 1) and a manufacturing method thereof (see FIG. 2 to FIG. 7).

The manufacturing method of the laminated core inductor 1 comprises the following steps: (A) sequentially laminating a first circuit ceramic mother chip 110, a second circuit ceramic mother chip 120, and a third circuit from bottom to top. a ceramic mother chip 130, and a fourth circuit ceramic mother chip 140 (shown in FIG. 2); (B) a surface coated with a carrier film 150 of an array of bonding pads 1501 facing the first circuit A first predetermined circuit pattern 1120 of the ceramic mother substrate 110 is arranged in an array (as shown in FIG. 3); (C) an array of the pad electrode 1501 is transferred to the first predetermined circuit pattern on the first circuit ceramic mother substrate 110. The array of 1120 thus constitutes an array of first circuit patterns 112 (as shown in FIG. 4); (D) stripping the carrier film 150 (as shown in FIG. 5); (E) sintering the circuit ceramic master chips 110, 120, 130 , 140 to form a collective substrate 100 (as shown in FIG. 6); and (F) to scribe a The assembly substrate 100 is scribed such that the collective substrate 100 is divided into a plurality of laminated bodies 10, and the array of first circuit patterns 112 in the collective substrate 100 is divided into a plurality of first circuit patterns 112. A laminated core inductor 1 as shown in FIG. 1 is constructed.

As shown in FIG. 1 , the laminated core inductor 1 delineated by the step (F) is sequentially included from bottom to top: a first circuit ceramic piece 11 , a second circuit ceramic piece 12 , and a first circuit ceramic piece 11 . The third circuit ceramic piece 13, and a fourth circuit ceramic piece 14. The first circuit ceramic piece 11 has a non-magnetic body 111 and a first circuit pattern 112 disposed in the non-magnetic body 111 of the first circuit ceramic piece 11. The second circuit ceramic piece 12 and the third circuit ceramic piece 13 respectively have a magnetic body 121, 131, and a second circuit pattern 122 and a third circuit pattern 132 respectively disposed in the magnetic bodies 121, 131 thereof. The fourth circuit ceramic piece 14 has a non-magnetic body 141 and a fourth circuit pattern 142 disposed in the non-magnetic body 141 of the fourth circuit ceramic piece 14.

The laminated core inductor 1 is formed by using the circuit patterns 112, 122, 132, and 142 of the circuit ceramic sheets 11, 12, 13, and 14 to form an inner winding type coil, and is matched with the magnetic bodies 121, 131 to form a magnetic core of the laminated core inductor 1. However, in detail, before performing this step (A), a plurality of ceramic mother sheets (not shown) are sequentially formed to form a plurality of through holes for each ceramic mother sheet, and conductive holes are filled in the respective through holes. The circuit ceramic masters 110, 120, 130, 140 can be prepared by forming a plurality of conductive conductors and applying a conductive paste on each of the ceramic mother sheets to form a plurality of circuits such as circuit patterns 112, 122, 132, and 142. . In addition, after the sintering process of the step (E) and the drawing of the step (F) are performed, the laminated layers can be obtained. The design surface of the laminated body 10 of the magnetic core inductor 1. As far as the process surface is concerned, the procedure of the previous case 1 is rather cumbersome, which increases the manufacturing cost. In addition, since the laminated body 10 is obtained by stacking and sintering the circuit ceramic mother chips 110, 120, 130, and 140, the volume of the laminated core inductor 1 is also increased, which is disadvantageous. Arrange to the layout on the board.

It can be seen from the above description that simplifying the manufacturing method of the appearance surface of the magnetic core inductor to reduce the manufacturing cost is a difficult problem to be solved by those skilled in the technical field.

Accordingly, it is an object of the present invention to provide a preform for a magnetic core inductor.

Therefore, the preform of the novel magnetic core inductor is a base connected to a magnetic substrate, the base has a contoured surface, and the contour surface of the base includes a first side edge and a first oppositely disposed Two side edges. The preform of the magnetic core inductor comprises: a main body portion and at least one connecting portion.

The main body portion has a contoured surface, and the contoured surface of the main body portion includes a first side edge and a second side edge disposed oppositely. The connecting portion has a contoured surface, and the contoured surface of the connecting portion includes a first end and a second end disposed oppositely. The first end of the connecting portion is connected to the second side edge of the base, and extends from a second side edge of the base toward a first direction of the first side edge of the main body portion to enable the connection The second end of the portion is connected to the first side edge of the main body portion, and the contour surface of the connecting portion is coupled to the contour surface of the main body portion and the contour surface of the base portion. In the present invention, the main body portion and the connecting portion are formed by a material similar to the magnetic substrate, and the main body portion is connected thereto. The unity is unity.

The utility model has the advantages that the preform of the magnetic core inductor is pre-formed on the magnetic substrate without mechanical drawing, and the connecting portions are connected to the bases, so that the main body portions are easily broken, thereby facilitating the cutting. Mass production and simplified process. In addition, since a plurality of ceramic mother sheets are sintered, the preform of the magnetic core inductor has an integral structure and thus has high structural strength.

2‧‧‧Preform of magnetic core inductor

20‧‧‧Magnetic substrate

200‧‧‧Base

201‧‧‧ upper surface

2011‧‧‧Partial area

2012‧‧‧ remaining area

202‧‧‧lower surface

203‧‧‧ contour surface

204‧‧‧First side edge

205‧‧‧second side edge

21‧‧‧ Main body

210‧‧‧ contour surface

211‧‧‧ first side edge

212‧‧‧Second side edge

213‧‧‧ trench

214‧‧‧Perforation

22‧‧‧Connecting Department

220‧‧‧ contour surface

221‧‧‧ first end

222‧‧‧ second end

2221‧‧‧ Groove

3‧‧‧ photoresist layer

31‧‧‧Prescribed pattern

310‧‧‧ appearance shape

311‧‧‧Base section

312‧‧ ‧Bridge

3121‧‧ ‧ gap

313‧‧‧ Body Department

4‧‧‧Mold

41‧‧‧ cavity

X‧‧‧ first direction

Y‧‧‧second direction

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is an exploded perspective view showing a layer disclosed by the Taiwan Patent Publication No. TW 201440090 A. Magnetic core inductor; FIG. 2 is a cross-sectional view showing a step (A) of the manufacturing method of the laminated magnetic core inductor; FIG. 3 is a cross-sectional view showing the manufacturing method of the laminated magnetic core inductor a step (B); FIG. 4 is a cross-sectional view illustrating a step (C) of the method of manufacturing the laminated core inductor; and FIG. 5 is a cross-sectional view illustrating the method of manufacturing the laminated core inductor a step (D); FIG. 6 is a cross-sectional view illustrating a step (E) of the method of manufacturing the laminated core inductor; and FIG. 7 is a cross-sectional view illustrating the method of manufacturing the laminated core inductor One step (F); Figure 8 is a top plan view showing a first embodiment of the preform of the novel magnetic core inductor; Figure 9 is a top plan view showing a second embodiment of the preform of the novel magnetic core inductor; Figure 10 It is a top view showing a state in which a main body portion of a preform of the magnetic core inductor of the second embodiment is formed with a plurality of grooves; FIG. 11 is a top plan view showing the core inductance of the second embodiment. Figure 12 is a top plan view showing a third embodiment of the preform of the novel magnetic core inductor; Figure 13 is a line along the line of Figure 12; FIG. 14 is a top plan view showing a first step (a1) of the first mass production method of the preform of the novel magnetic core inductor; FIG. 15 is a line XV along FIG. -XV is a schematic cross-sectional view; FIG. 16 is a top plan view illustrating a first step (b1) of the first mass production method; and FIG. 17 is a cross-sectional view taken along line XVII-XVII of FIG. 18 is a top view showing one of the first mass production methods Step (C1); FIG. 19 is a top plan schematic view illustrating a first production step of the method (D1); Figure 20 is a perspective view showing a mold of one step (a2) of the second mass production method of the preform of the novel magnetic core inductor; Figure 21 is a schematic cross-sectional view showing the second mass production method Step (a2); Fig. 22 is a schematic cross-sectional view showing one step (b2) of the second mass production method.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIG. 8, a first embodiment of the preform 2 of the novel magnetic core inductor is a base 200 connected to a magnetic substrate 20. The base 200 has a contoured surface 203, and the base 200 The contoured surface 203 includes a first side edge 204 and a second side edge 205 that are oppositely disposed. The preform 2 of the magnetic core inductor comprises a main body portion 21 and two connecting portions 22.

The body portion 21 has a contoured surface 210. The contoured surface 210 of the body portion 21 includes a first side edge 211 and a second side edge 212 disposed oppositely.

Each of the connecting portions 22 has a contoured surface 220. The contoured surface 220 of each connecting portion 22 includes a first end 221 and a second end 222 disposed oppositely. As shown in FIG. 8, the first end 221 of each connecting portion 22 is connected to the second side edge 205 of the base 200, and is the first side from the second side edge 204 of the base 200 toward the main body portion 21. A first direction X of the side edge 211 extends to connect the second end 222 of each connecting portion 22 to the first side edge 211 of the main body portion 21, and the contour surface 220 of each connecting portion 22 is coupled to the main body portion 21 round The profile 210 and the contoured surface 203 of the base 200. The connecting portions 22 are spaced apart from each other along a second direction Y that is a predetermined angle with the first direction X. In the first embodiment of the present invention, the predetermined angle is exemplified by 90 degrees, but is not limited thereto.

More specifically, in the first embodiment of the present invention, the contour surface 203 of the susceptor 200 is a top surface area, a bottom surface area, and a left side area of the susceptor 200 as shown in FIG. a right side area, a front area and a back area are defined together; the contour surface 210 of the main body portion 21 is a top surface area, a bottom surface area, and a bottom surface area of the main body portion 21 as shown in FIG. The left side area, the right side area, the front area and the back area are defined together; the contour surface 220 of each connecting portion 22 is a top surface and a bottom surface of each connecting portion 22 as shown in FIG. The area, a front area and a back area are defined together; in addition, the main body portion 21 and the connecting portion 22 are formed of a material similar to the magnetic substrate 20. Preferably, the material is selected from a magnetic metal such as iron (Fe), cobalt (Co), nickel (Ni), or a magnetic ceramic such as a ferrite magnet having an inverse spinel structure. (ferrite; Fe ₃ O ₄ ). According to the foregoing description, the contour surface 220 of each connecting portion 22 of the first embodiment of the present invention can engage the contour surface 203 of the base 200 and the contour surface 210 of the main body portion 21; further, based on the main body portion 21 and the The connecting portion 22 is made of the same material as the magnetic substrate 20, and the main body portion 21 is integral with the connecting portions 22, so that the overall structural strength of the main body portion 21 of the pre-shaped body 2 is high, unlike the figure. In the laminated core inductor 1 shown in Fig. 1, there is a problem that the strength is insufficient between the adjacent interfaces of the circuit ceramic sheets 11, 12, 13, and 14.

The above detailed description of the first embodiment of the present invention is integrated. Briefly, the present invention is defined as an integral structure as described above. In addition, the so-called integral structure means that the main body portion 21 is formed by sandblasting, etching, or punching a bulk material, so that the main body portion 21 has high structural strength and there is no problem of interlayer peeling inside. The block may be a plate-like block such as a ferrite wafer or a nickel substrate.

It should be added here that the preform 2 of the novel magnetic core inductor is mainly mass-produced through a microelectromechanical system (MEMS) process. The related mass production method of the preform 2 of the novel magnetic core inductor will be described later. Further, the preform 2 of the novel magnetic core inductor can also be permeable to the MEMS process to easily form the wiring required for the magnetic core inductor on the main body portion 21 of the preform 2.

Referring to FIG. 9, a second embodiment of the preform 2 of the novel magnetic core inductor is substantially the same as the first embodiment, except that a width of each connecting portion 22 is decreased along the first direction X. . The purpose of reducing the width of each connecting portion 22 in the preform 2 of the second embodiment in the first direction X is the mass production method of the preform 2 of the novel magnetic core inductor, and the detailed purpose and use thereof Then explain later.

Referring to FIG. 10 and FIG. 11 , in order to form a special circuit layout on the main body portion 21 to form an inductance element, the pre-shaped body 2 can also form a plurality of contour surfaces 210 of the main body portion 21 on the main body portion 21 through a MEMS process. The top surface region extends to a groove 213 (shown in FIG. 10) of the bottom surface region thereof, or a plurality of perforations extending through the top surface area and the bottom surface area of the contour surface 210 of the main body portion 21. 214 (as shown in Figure 11). However, it should be additionally noted that when the material constituting the magnetic substrate 20 is selected from the magnetic metal and is to be processed by the MEMS process on the grooves 213 or the through holes 214 of the main body portion 21 of the preform 2 When the winding circuit is completed, an insulator is required to be applied before the winding circuit is completed to prevent the short circuit problem. Specifically, the main body portion 21 of the preform 2 can be used as a magnetic core inductor after completing the winding circuit through the MEMS process.

Referring to Figures 12 and 13, a third embodiment of the preform of the novel magnetic core inductor is substantially identical to the second embodiment except that the second end 222 of each connecting portion 22 has at least one recess. Slot 2221. The groove 2221 of each connecting portion 22 is extended from one of the top surface area of the contour surface 220 of each connecting portion 22 and the bottom surface area thereof to the other of the top surface area and the bottom surface area thereof, and is The back surface region of the contoured surface 220 of each of the connecting portions 22 is recessed in the second direction Y. In the third embodiment of the present invention, the number of the grooves 2221 of each connecting portion 22 is two, and one of the two grooves 2221 of each connecting portion 22 (see the groove 2221 shown in FIG. 13) is The top surface of the contoured surface 220 extends toward the bottom surface region thereof, and the other of the two recesses 2221 of each connecting portion 22 (see the lower recess 2221 shown in FIG. 13) is from the contour surface 220 thereof. The bottom surface area extends toward the top surface area.

It should be added here that the grooves 2221 shown in FIG. 12 are recessed in the second direction Y to penetrate the front and back regions of the contour surface 220 of each connecting portion 22, but the grooves 2221 Not limited to the embodiment shown in FIG. 12, each of the grooves 2221 may be a front area and a back side area that do not penetrate the contoured surface 220 of each of the connecting portions 22. The purpose of each groove 2221 is to match The mass production method of the preform 2 of the novel magnetic core inductor, therefore, the detailed purpose and use of each recess 2221 will also be described later.

Referring to FIG. 14 to FIG. 17, a first mass production method of the preform of the novel magnetic core inductor is implemented by a MEMS process, which sequentially includes a step (a1) and a step (b1).

Referring to FIG. 14 and FIG. 15, the step (a1) is to form a photoresist layer 3 having a predetermined pattern 31 on an upper surface 201 and a lower surface 202 of the magnetic substrate 20. Each of the predetermined patterns 31 has an array covering the upper surface 201 and the lower surface 202 of the magnetic substrate 20, each array having a plurality of external shapes 310, and each of the external shapes 310 sequentially has a base connected to each other along the first direction X. The portion 311, the two bridge portions 312 and a body portion 313. The body portions 313 of the outer shape 310 are spaced apart from each other along the first direction X or along the second direction Y, and the base portion 311 of the outer shape 310 is along the first direction X or along the second The directions Y are connected to each other. In the first mass production method, the outer shape 310 of each photoresist layer 3 is arranged along the first direction X as shown in FIG. 14, and the predetermined pattern 31 of the photoresist layers 3 is The outer shape 310 is vertically aligned with each other as shown in FIG. 15; the body portions 313 of the outer shape 310 are spaced apart from each other along the second direction Y, and the base portion 311 of the outer shape 310 is along the first The two directions Y are connected to each other; a width of the bridge portion 312 of each appearance shape 310 is decreased along the first direction X, and the bridge portions 312 of the respective appearance shapes 310 are spaced apart from each other along the second direction Y; Each of the bridge portions 312 of the outer shape 310 of the upper surface 201 of the magnetic substrate 20 and the photoresist layer 3 of the lower surface 202 is formed adjacent to the body portion 313 thereof. The notch 3121 is formed, and each of the notches 3121 is recessed from the peripheral edge of the bridge portion 312 in the second direction Y so that the bridge portions 312 and the main body portions 313 are disconnected from each other.

Briefly, the graphic outline of each of the external shapes 310 (i.e., the base portion 311, the bridge portion 312, and the body portion 313) is the same as the base of the preform 2 of the third embodiment as shown in FIG. The top surface area of the contoured surface 203 of 200, the top surface area of the contoured surface 220 of the connecting portion 22 of the preform 2, and the top surface area of the contoured surface 210 of the body portion 21 of the preform 2. In addition, the material of the magnetic substrate 20 constituting the step (a1) has been described above, and will not be further described herein.

Referring to FIG. 15 and referring to FIG. 16 and FIG. 17, the step (b1) is to remove the magnetic substrate 20 exposed outside the array of the predetermined patterns 31 of the photoresist layers 3 by wet etching, dry etching or sand blasting. Thus, a plurality of preforms 2, such as the base 200 shown in FIG. 12, and a plurality of magnetic core inductors as shown in FIG. 12, which are connected to the respective susceptors 200, are formed.

Referring to FIG. 17 and referring to FIG. 18 and FIG. 19, preferably, the first mass production method further comprises a step (c1) and a step (d1) after the step (b1). The step (c1) is to remove the photoresist layers 3 to leave an array of the preforms 2 as shown in FIG. 18 on the magnetic substrate 20, and the susceptors 200 connected to each other along the second direction Y. Array. The step (d1) is after the step (c1), and at the connecting portions 22 of the preform 2 of the core inductors, an external force is applied from top to bottom or from bottom to top, respectively. The second end 222 of the connecting portion 22 of the preform 2 of each magnetic core inductor is broken from the first side edge 211 of the main body portion 21 of each pre-form 2, thereby pre-setting each magnetic core inductor The body portion 21 of the body 2 is detached from each of the connecting portions 22 to produce the body portion 21 of the preforms 2 in an amount.

According to the detailed description of the mass production method, the notches 3121 located at the bridging portions 312 of the outer shape 310 of the photoresist layers 3 are used for performing the wet etching and dry etching of the magnetic substrate 20 in the step (b1). After etching or sand blasting, the grooves 2221 of the connecting portions 22 of the preforms 2 as shown in FIG. 12 can be formed, and the grooves 2221 shown in FIG. 12 or even the width-decreased connecting portions 22 in FIG. The purpose is to make the first mass production method beneficial to the utility of breaking the external force to achieve mass production when performing the step (d1). It should be noted that each of the grooves 2221 may be formed in the step (b1) after the connecting portion 22 of each preform 2, and then formed in each of the preforms 2 by a scriber or another etching method. On the connecting portion 22.

It should be additionally noted here that although the first mass production method is a preform 2 for mass production of a magnetic core inductor, as explained in the respective embodiments of the preform 2 of the magnetic core inductor described above, The preform 2 of the magnetic core inductor can form a winding circuit required for the magnetic core inductor on the main body portion 21 through the MEMS process; therefore, the step (d1) of the first mass production method can also be completed. The winding circuit required for the core inductor is implemented.

In detail, the first mass production method of the preform 2 of the novel magnetic core inductor only needs to pass through the step (a1) and the step (b1) to complete the contour surface of the preform 2 of the magnetic core inductor. It is not necessary to process the ceramic mother sheets through the through holes, filling and coating the conductive paste to form the circuit ceramic mother sheets 110, 120, 130, 140, and after sintering, as described in the previous paragraph 1. After the process such as scribing and processing, each layered type as shown in Fig. 7 can be obtained. The design surface of the laminated body 10 of the magnetic core inductor 1. Furthermore, the main body portion 21 of the preform 2 of the novel magnetic core inductor is integrated with the connecting portion 22, and the overall structural strength of the main body portion 21 is high, unlike the laminated core inductor shown in FIG. In general, there is a problem of insufficient strength between adjacent interfaces of the circuit ceramic sheets 11, 12, 13, and 14.

Referring to FIG. 20, FIG. 21 and FIG. 22, a second mass production method of the preform of the novel magnetic core inductor is implemented by punching a mold 4, which comprises a step (a2) and a step (b2) in sequence. One step (b2'), and one step (c2).

Referring to FIG. 20 and FIG. 21, the step (a2) is such that an array of the mold holes 41 of the mold 4 faces the upper surface 201 or the lower surface 202 of the magnetic substrate 20 such that a portion of the area of the magnetic substrate 20 is facing The array of mold holes 41. In the second mass production method, the array of the mold holes 41 of the mold 4 faces the upper surface 201 of the magnetic substrate 20, but the present invention is not limited thereto.

Preferably, the material of the magnetic substrate 20 constituting the step (a2) is selected from the magnetic metal or a magnetic ceramic green. In the second mass production method, the material of the magnetic substrate 20 constituting the step (a2) is selected from the magnetic ceramic green body, such as a ferrite magnet green body.

Referring to FIG. 22, the step (b2) is to punch the upper surface 201 and the lower surface 202 of the magnetic substrate 20 with the mold 4, so that the partial region 2011 of the magnetic substrate 20 is placed in the array of the mold holes 41, and A remaining area 2012 of the magnetic substrate 20 facing the array of the mold holes 41 is removed, and an array of the susceptor 200 and the array of pre-forms 2 as shown in FIG. 18 are formed. The Each of the preforms 2 of the array of preforms 2 is corresponding to each of the susceptors 200 connected to the array of susceptors 200, and the body portions 21 of the preforms 2 are spaced apart from each other along the first direction X or along the second direction Y. arrangement. As shown in FIG. 18, in the second mass production method, the main body portions 21 of the preforms 2 are spaced apart from each other along the second direction Y.

In detail, the second mass production method is to mass-produce the preform 2 of the magnetic core inductor shown in FIG. 9. In order to further form the recesses 2221 as shown in FIG. 18, the step is performed ( After b2), each of the grooves 2221 may be formed on the connecting portion 22 of each of the preforms 2 by the aforementioned cutter or by etching. It is worth mentioning that each preform 2 in the array of preforms 2 may also be a preform 2 of a magnetic core inductor as shown in FIG. 8 or a magnetic core inductor as shown in FIG. 10 or FIG. Preform 2.

The step (b2′) is to sinter the magnetic ceramic green body constituting the material of the magnetic substrate 20 to densify the magnetic ceramic green body, thereby improving the overall structural strength of the array of the susceptor 200 and the array of the preform 2 . However, it is to be noted here that when the material of the magnetic substrate 20 constituting the second mass production method is selected from the magnetic metal, the step (b2') may be omitted. In the second mass production method, whether the step (b2') is carried out or not depends on the selection of the material.

Referring to FIG. 18, the step (c2) is the same as the step (d1) of the first mass production method, and the main body portion 21 of the preform 2 of each magnetic core inductor is detached from each connecting portion 22, and no more is added here. Narration.

In detail, the mass production method of the preform 2 of the novel magnetic core inductor only needs to pass through the step (a1) and the step (b1) or the step. (a2) and the step (b2), the contour surface of the preform 2 of the magnetic core inductor can be completed, and it is not necessary to pass through the through hole, fill and coat each ceramic master as described in the previous case 1. After the conductive paste or the like is formed to form the circuit ceramic mother sheets 110, 120, 130, and 140, and after the processes such as sintering processing and scribing processing, the laminated body of each laminated core inductor 1 shown in FIG. 7 can be obtained. 10 appearance surface. Furthermore, in the preform 2 of the novel magnetic core inductor, the main body portion 21 and the connecting portion 22 are integrated, and the overall structural strength of the main body portion 21 is high, unlike the laminated inductor 1 shown in FIG. There is a problem of insufficient strength between adjacent interfaces of the circuit ceramic sheets 11, 12, 13, and 14.

In summary, the preform 2 of the core inductor of the present invention can be connected to the bases 200 correspondingly in the array, and the grooves 2221 in the connecting portions 22 are designed. After the main body portion 21 completes the line required for the magnetic core inductor through the MEMS process, the main body portion 21 is easily broken, which is advantageous for mass production and simplified process; further, the preform 2 of the magnetic core inductor Since the connecting portion 22 and the main body portion 21 are integrally formed, the overall structural strength of the main body portion 21 is high, and the object of the present invention can be achieved.

However, the above is only the embodiment of the present invention, and the scope of the present invention cannot be limited thereto, that is, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still It is within the scope of this new patent.

2‧‧‧Preform of magnetic core inductor

20‧‧‧Magnetic substrate

200‧‧‧Base

203‧‧‧ contour surface

204‧‧‧First side edge

205‧‧‧second side edge

21‧‧‧ Main body

210‧‧‧ contour surface

211‧‧‧ first side edge

212‧‧‧Second side edge

22‧‧‧Connecting Department

220‧‧‧ contour surface

221‧‧‧ first end

222‧‧‧ second end

2221‧‧‧ Groove

X‧‧‧ first direction

Y‧‧‧second direction

Claims (5)

A preform of a magnetic core inductor is a base connected to a magnetic substrate, the base has a contoured surface, and the contoured surface of the base includes a first side edge and a second side edge disposed oppositely The preform of the magnetic core inductor includes: a main body portion having a contoured surface, the contoured surface of the main body portion includes a first side edge and a second side edge disposed oppositely; and at least one connecting portion having a a contoured surface, the contoured surface of the connecting portion includes a first end and a second end disposed oppositely, the first end of the connecting portion is connected to the second side edge of the base, and is the The two side edges extend toward a first direction of the first side edge of the main body portion such that the second end of the connecting portion is coupled to the first side edge of the main body portion, and the contoured surface of the connecting portion is coupled to the The contour surface of the main body portion and the contour surface of the base; wherein the main body portion and the connecting portion are formed of a material similar to the magnetic substrate, and the main body portion and the connecting portion are integrated. The preform of the magnetic core inductor according to claim 1, wherein the number of the connecting portions is two, a width of each connecting portion is decreased along the first direction, and the connecting portions are along the same The second direction in which the first direction is sandwiched by a predetermined angle is spaced apart from each other. The preform of the magnetic core inductor according to claim 2, wherein the second end of each connecting portion has at least one groove, each groove being a top surface area and a bottom surface area of the contour surface of each connecting portion. One of the extensions to the other of the top surface area and the bottom surface area thereof, and is from the contour surface of each connection portion The second direction is recessed. The preform of the magnetic core inductor according to claim 3, wherein the number of the grooves of each connecting portion is two, and one of the two grooves of each connecting portion is from the top surface of the contour surface thereof The bottom surface region extends, and the other of the two grooves of each connecting portion extends from the bottom surface region of the contoured surface toward the top surface region thereof. The preform of the magnetic core inductor of any one of claims 1 to 4, wherein the material is selected from a magnetic metal or a magnetic ceramic.