TWI435348B - Magnetic component - Google Patents

Description

Magnetic component

The present invention relates to magnetic components, and more particularly to magnetic components having a winding structure.

In general, many electrical components, such as transformers and inductor components, are often installed in electrical equipment. In order to adapt to the thinning of electrical equipment, the magnetic components and the conductive windings used inside must also be thinned to reduce electrical equipment. The overall volume.

Taking a transformer as an example, it is known to wind a wire around a winding base as a primary winding and a secondary winding of a transformer, since the winding base must retain a certain space for the primary and secondary windings to be wound, It is difficult to reduce the volume of the transformer, which in turn affects its power density. Therefore, in order to reduce the volume of the transformer, it has been conventionally made of a conductive winding made of a copper sheet instead of a known conductive winding made by winding.

Referring to Figure 1, Figure 1 depicts an exploded view of a prior art transformer. As shown in FIG. 1, the transformer 1 includes a bobbin 11, a first copper piece 12, a second copper piece 13, and a magnetic core group 14. The bobbin 11 has an inner ring 111. The first copper piece 12 has pins 121 and 122. The second copper piece 13 has pins 131 and 132. The core group 14 has a first core member 141. And the second core member 142, the first core member 141 has an axial center 141a and a second core member 142a. For the transformer 1, the assembly method is generally: the first copper piece 12 and the second copper piece 13 are sleeved on the inner ring 111 of the bobbin 11, Thereafter, the bobbin 11 is assembled between the first core member 141 and the second core member 142, and the shaft cores 141a, 142a are passed through the through holes of the inner ring 111 of the bobbin 11.

However, for the transformer 1, the positions of the leads 121 and 122 of the first copper piece 12 and the pins 131 and 132 of the second copper piece 13 are not well controlled, and are easily in the X direction (radial direction) and the Y direction (axial direction). ) An offset is generated, which may result in a poor pin size of the finished transformer, which affects the plug-in. In addition, the gap between the first copper sheet 12 and the second copper sheet 13 is too large, that is, it is easy to be shifted in the Y direction, which is not well controlled, which may cause a poor quality of the transformer.

In order to fix the above-mentioned pins, a person skilled in the art has proposed a base, as shown in FIG. 2, and FIG. 2 is a schematic structural view of a substrate for fixing the pins of the copper piece of the transformer 1. As shown in the figure, the substrate 2 has a plurality of through holes 21, which can be used to fix the first copper piece 12 of the transformer 1 and the respective pins of the second copper piece 13, so that the first copper piece 12 and the second copper piece The pins of 13 are not offset.

However, for the substrate 2, the pins of the first copper piece 12 and the second copper piece 13 can be fixed, but the first copper piece 12 and the second copper piece 13 cannot be fixed, that is, the first copper piece 12 cannot be solved. The offset between the second copper sheets 13. In addition, since the additional configuration of the substrate 2 is required, the production cost, such as the raw material cost of the substrate 2 and the labor cost for producing it, will be increased.

In view of this, how to design a magnetic component, improve its bobbin and conductive winding, so that the conductive parts and their leads in the conductive winding are not offset, thereby improving the quality of the magnetic component product and saving production costs, which is related in the industry. A topic that technicians need to solve urgently.

In order to solve the above problems, the present invention provides a magnetic component comprising: a bobbin having an inner ring structure, the inner ring structure defining a through passage and having two or more protrusions at both ends thereof; Two conductive windings are symmetrically disposed on the first side and the second side of the bobbin, and the conductive winding has two or more conductive members, each of the conductive members abutting each other, each of the conductive members has a through hole and is located around the through hole a notch corresponding to the protruding portion of the inner ring structure, each conductive member also has two or more pins at the same time; and a magnetic core group is disposed through the through-channel and combined with the bobbin; wherein, each of the conductive layers is simultaneously/separately The notch of the component is assembled on the inner ring structure of the bobbin by the protruding portion of the inner ring structure, and the respective conductive members are respectively rotated in the tangential direction of the through hole so as to make the notch and the inner part of the conductive member The protrusions of the ring structure are misaligned such that the respective conductive members are stuck on the inner ring structure such that the conductive members and their pins are not offset in the axial direction of the through hole.

In an embodiment of the invention, the bobbin further has a fixing structure for fixing the pins of the conductive members so that the pins of the conductive members are not offset in a direction perpendicular to the axial direction of the through hole. .

In an embodiment of the invention, when each of the conductive members has a first pin and a second pin, the fixing structure of the bobbin has a first notch, a second notch, and a third recess. And a first pin of each conductive component is alternately received in the first recess and the third recess, and the second pin of each conductive component is received in the second recess.

In an embodiment of the invention, the bobbin further has a winding groove for winding a primary winding thereon.

In an embodiment of the invention, each of the conductive members is formed by stacking two or more metal conductive sheets.

In an embodiment of the invention, the metal conductive sheet is a copper sheet.

In an embodiment of the invention, the electrically conductive members are electrically insulated from each other.

In an embodiment of the invention, the magnetic core group has a first magnetic core component and a second magnetic core component, the first magnetic core component has a first axial center, and the second magnetic core component has a second axial center. The first axis and the second axis are disposed in the through channel.

In summary, the magnetic component proposed by the present invention improves the structure of the bobbin and the conductive winding, so that the conductive components and the pin pins in the conductive winding are not offset, thereby improving the quality of the magnetic component product. . In addition, since the existing substrate for fixing the pins is not used, the production cost can be saved.

3‧‧‧Transformers

31‧‧‧ Winding Rack

311‧‧‧ Inner ring structure

3111, 3111a, 3111b‧‧‧ protruding parts

312‧‧‧Fixed structure

312a‧‧‧first notch

312b‧‧‧second notch

312c‧‧‧ third notch

313‧‧‧Rolling groove

32, 32a, 32b‧‧‧ conductive parts

321‧‧‧through hole

322a, 322b‧‧ ‧ gap

323, 323a, 323b‧‧‧ pins

33‧‧‧Magnetic core group

331‧‧‧First core part

331a‧‧‧first axis

332‧‧‧Second core component

332a‧‧‧Second axis

The above and other objects, features, advantages and embodiments of the present invention will become more <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; A schematic structural view of a substrate for fixing the pins of the copper piece of the transformer 1; FIG. 3 is an exploded view of the transformer according to an embodiment of the present invention; and FIG. 4A-4B is a view showing the winding of the transformer shown in FIG. Schematic diagram of the structure of the rack; FIG. 5A-5B is a schematic view showing the structure of the conductive member in the conductive winding of the transformer shown in FIG. 3; FIG. 6A-6C is a diagram showing the bobbin in the transformer shown in FIG. Schematic diagram of assembly with conductive parts.

The following is a detailed description of the embodiments with reference to the drawings, but the embodiments provided are It is not intended to limit the scope of the invention, and the description of the operation of the structure is not intended to limit the order in which it is performed, and any device that is recombined by the elements, resulting in equal efficiency, is within the scope of the invention. In addition, the drawings are for illustrative purposes only and are not drawn to the original dimensions.

By "magnetic element" as used herein is meant a magnetic element having a winding structure that can include at least a transformer and an inductive element. Further, as used herein, "two or more", the meaning of which includes "two", that is, "two or more" means "two or more than two."

Please refer to FIG. 3, FIG. 4A-4B and FIG. 5A-5B simultaneously. FIG. 3 is an exploded view of the transformer according to an embodiment of the present invention, and FIG. 4A-4B is a diagram showing the transformer shown in FIG. Schematic diagram of the structure of the bobbin, FIG. 5A-5B is a schematic view showing the structure of the conductive member in the conductive winding of the transformer shown in FIG.

As shown in FIG. 3, the transformer 3 includes a bobbin 31, two conductive windings including conductive members 32, and a core group 33.

As shown in FIG. 4A-4B, the bobbin 31 has an inner ring structure 311, and the inner ring structure 311 has two or more protrusions 3111, that is, two or more protrusions 3111, in this embodiment. In the manner, the two protrusions 3111 are illustrated, that is, the protrusions 3111a, 3111b as shown in the figure, but not limited thereto. In other embodiments, the protrusions 3111 may be 3, 4 or Other numbers, and the position between the respective protrusions 3111 are not limited as shown in the drawing. Further, in the present embodiment, the inner ring structure 311 can define a through passage P, that is, a passage is formed inside thereof. In the present embodiment, the bobbin 31 may further have a fixing structure 312 located at a side of the bobbin 31. The fixing structure 312 has a first notch 312a. The second recess 312b and the third recess 312c may be formed by a plurality of bumps. In the present embodiment, the bobbin 31 further has a winding groove 313. The winding groove 313 can be wound with a primary winding (not shown) to form a primary winding.

For the two conductive windings, the first surface S1 and the second surface S2 of the bobbin 31 can be symmetrically arranged, that is, the conductive winding on the side of S1 of the bobbin 31 is symmetric with the conductive winding on the side of S2. Structure, so for the sake of brevity, the winding bobbin 31 and the conductive winding on the side of S1 will be mainly described below, and the conductive winding of the other side S2 will not be described. The conductive winding may have two or more conductive members 32, and each of the conductive members 32 abut each other. In the present embodiment, as shown in FIG. 3, two conductive members 32 are described, that is, the conductive windings are electrically conductive. The component 32a and the conductive component 32b, and the conductive component 32a and the conductive component 32b are placed against each other, however, it should be noted that in other embodiments, the conductive winding may have more than two conductive components 32.

As shown in FIGS. 5A-5B, the conductive member 32 has a through hole 321 and a notch 322 located at the periphery of the through hole 321 and corresponding to the protruding portion 3111 of the inner ring structure 311, for example, when the inner ring structure 311 has the protruding portion 3111a. At 3111b, the conductive member 32 has a notch 322a and a notch 322b. Further, the conductive member 32 has two or more pins 323. In the present embodiment, two pins are exemplified, that is, the conductive member 32 has a first pin 323a and a second pin 323b.

As shown in FIG. 3, the magnetic core group 33 is bored in the above-described through passage P and combined with the bobbin 31. The magnetic core group 33 has a first core member 331 and a second core member 332. The first core member 331 has a first axis 331a, and the second core member 332 has a second axis 332a. The first axial center 331a and the second axial center 331a are disposed in the through passage P.

Referring to FIG. 6A-6C, FIG. 6A-6C is a schematic view showing the assembly of the bobbin and the conductive member in the transformer shown in FIG.

First, as shown in FIG. 6A, the notches 322a, 322b of the conductive member 32 are respectively positioned on the protruding portions 3111a and 3111b of the inner ring structure 311, and the conductive member 32 is assembled on the inner ring structure 311 of the bobbin 31. That is, the conductive member 32 is sleeved on the inner ring structure 311 through the through hole 321 thereof. Then, as shown in FIG. 6B, the conductive member 32 is rotated such that the notches 322a, 322b of the conductive member 32 are not opposed to the protruding portions 3111a, 3111b of the inner ring structure 311, and at this time, the conductive member 32 is caused to be stuck therein. On the ring structure 311, the protruding portions 3111a, 3111b of the inner ring structure 311 serve as the latching members, so that the conductive member 311 and its pins 323a, 323b are not offset in the axial direction of the through hole 321 (in the Y direction as shown). . Thereafter, preferably, as shown in FIG. 6C, the conductive member 32 is continuously rotated to a position, so that the pins 323a, 323b of the conductive member 32 can be respectively received in the notches 312a, 312b in the fixed structure 312. That is, the pins 323a, 323b of the conductive member 32 are latched in the recesses 312a, 312b such that the pins 323a, 323b of the conductive member 32 are perpendicular to the axial direction of the through hole 321 (in the Y direction as shown). There is no offset in one direction (X direction in the figure). Here, only one conductive member 32, that is, the process in which the conductive member 32b is assembled on the bobbin 31, will be described, and the conductive member 32a may be assembled in a similar manner and assembled on the bobbin 31 prior to the conductive member 32b. One pin and the second pin are respectively accommodated in the notches 312c, 312b, except that the conductive member 32a is close to the first face S1 of the bobbin 31 when the conductive member 32a is on the side of S3 as shown in FIG. When assembled, the conductive member 32b is assembled with the opposite side S4 of the face S3 being close to the first face S1 of the bobbin 31. Specifically, when the conductive member 32a has its S3 side close to the bobbin The first side S1 of 31 is assembled on the bobbin 31 Then, the conductive member 32b is to be flipped by 180° and the back surface of the S3 side (S4) is assembled on the bobbin 31 near the first surface S1 of the bobbin 31, so that the conductive member 32a and the conductive member can be realized. The first pins of 32b are staggered in the notches 312a, 312c, and the second pins of the conductive member 32a and the conductive member 32b are accommodated in the recess 312b. By analogy, in other embodiments, when the conductive winding has more than two conductive members 32, then the first pins 323a of the conductive members 32 are still staggered in the recesses 312a, 312c, The first pin 323a of each of the conductive members 32 is housed in the recess 312b.

Further, in other embodiments, each of the conductive members 32 may be assembled on the bobbin 31 at the same time. Specifically, first, the notches 322a and 322b of the conductive members 32 (such as the conductive members 32a and 32b) are respectively placed on the protruding portions 3111a and 3111b of the inner ring structure 311, and the conductive member 32 and the conductive member 33 are simultaneously assembled. The inner ring structure 311 of the bobbin 31 is then rotated; then, the conductive members 32 are simultaneously rotated so that the notches 322a and 322b of the conductive members 32 are not aligned with the protruding portions 3111a, 3111b of the inner ring structure 311, thereby making the conductive members The 32-card is located on the inner ring structure 311 such that the conductive members 32 and their pins 323 are not offset in the Y direction, and when the pins 323a, 323b of the respective conductive members 32 are located in the notches 312a or 312c, 312b, respectively. At this time, the pins 323 of the respective conductive members 32 are stuck in the corresponding notches, and are not offset in the X direction.

As can be seen from the above, when each of the conductive members 32, such as the conductive member 32a and the conductive member 32b, is assembled on the bobbin 31, the conductive member 32a, the conductive member 32b, and the pin positions thereof are both in the X direction and the Y direction. Without being offset, the gap between the conductive member 32a and the conductive member 32b and its respective pin positions can be well controlled.

In this embodiment, the conductive member 32 may be superposed with two or more metal conductive sheets. And the same end pins are soldered together. For example, the conductive member 32 is superposed by two metal conductive sheets, and each metal conductive sheet has two pins, and then two metal conductive sheets are used. Stacked together and soldered the pins of the same end of the two metal conductive sheets together, thereby making the total number of pins of the two metal conductive sheets two, of course, the conductive member 32 may be more than Two metal conductive sheets are superposed. Preferably, the metal conductive sheet may be a copper sheet, but not limited thereto, and may be a metal conductive sheet made of other materials, such as a metal conductive sheet made of a copper alloy. It should be noted that in the present embodiment, each conductive member 32 (such as the conductive member 32a and the conductive member 32b) has the same structure, but in other embodiments, the conductive members 32 have a certain structure. They differ, but they must satisfy the same notch structure so as to be able to cooperate with the projections 3111 on the bobbin 31. In addition, each of the conductive members 32, such as the conductive member 32a and the conductive member 32b, is electrically insulated from each other. For example, an insulating layer may be applied on the surface layers of the conductive member 32a and the conductive member 32b, so that the conductive member 32a and the conductive member 32b are even They are close together, but they are still electrically insulated from each other.

In the present embodiment, of course, in order to stabilize the assembly of the transformer 3, a bonding member (not shown) may be selectively formed between the first core member 331 and the inner surface of the second core member 332, For example, the adhesive can make the assembly of the transformer 3 more stable by the use of the bonding member.

It should be noted that the above embodiment is only described by the transformer 3, but those skilled in the art should understand that in other embodiments, the winding frame 31 can be combined with the conductive winding and the magnetic core group 33 to form an inductance component. The structure and assembly method are the same as those of the above embodiment, and therefore will not be described herein.

In summary, the magnetic component proposed by the present invention improves the winding frame and the conductive winding thereof The structure makes the conductive parts in the conductive windings and their pin pins not offset, thereby improving the quality of the magnetic component product. In addition, since the existing substrate for fixing the pins is not used, the production cost can be saved.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and the present invention can be modified and modified without departing from the spirit and scope of the present invention. The scope is subject to the definition of the scope of the patent application attached.

3‧‧‧Transformers

31‧‧‧ Winding Rack

32, 32a, 32b‧‧‧ conductive parts

33‧‧‧Magnetic core group

331‧‧‧First core part

331a‧‧‧first axis

332‧‧‧Second core component

332a‧‧‧Second axis

Claims (6)

A magnetic component comprising: a bobbin having an inner ring structure and a fixed structure, the inner ring structure defining a through passage and having two or more protrusions at both ends thereof; two conductive a winding, symmetrically disposed on the first side and the second side of the bobbin, the conductive winding having two or more conductive members, each of the conductive members abutting each other, each of the conductive members having a through hole and located in the through hole a peripheral portion and a notch corresponding to the protruding portion of the inner ring structure, each of the conductive members further having two or more pins, wherein the fixing structure fixes the pins of each of the conductive members such that the pins of the conductive members are a direction that is perpendicular to an axial direction of the through hole is not offset; and a core group is disposed in the through passage and combined with the bobbin; wherein the notch of each of the conductive members is simultaneously/respectively located The protruding portion of the inner ring structure assembles each of the conductive members on the inner ring structure of the bobbin, and simultaneously rotates each of the conductive members in a tangential direction in which the through holes are located to make a gap of each of the conductive members With the inside The protruding portions of the structure are not aligned, so that the conductive members are located on the inner ring structure, so that the conductive members and their pins are not offset in the axial direction of the through hole; wherein each of the conductive members has a a first pin and a second pin, the fixing structure of the bobbin has a first notch, a second notch and a third notch, and the first pins of the conductive parts are staggered The grounding member is disposed in the first recess and the third recess, and the second pins of the conductive members are received in the second recess. The magnetic component of claim 1, wherein the bobbin further has a winding groove, The winding groove is for winding a primary winding thereon. The magnetic component according to claim 1, wherein each of the conductive members is formed by stacking two or more metal conductive sheets. The magnetic component of claim 3, wherein the metal conductive sheet is a copper sheet. The magnetic component of claim 1, wherein each of the electrically conductive members is electrically insulated. The magnetic component of claim 1, wherein the magnetic core group has a first core component and a second core component, the first core component having a first axis, the second core component having a second axis, the first axis and the second axis are disposed in the through channel.