TWI734664B - Improved structure of transformer wire frame - Google Patents

Abstract

An improved structure of a transformer bobbin has a first bobbin and a second bobbin. A plurality of magnetic conductive sheets are respectively provided with grooves on the top of the first bobbin, and the first bobbin and the second bobbin are respectively wound with coils at the same time. The coils are respectively connected to the first terminal group at the bottom of the first bobbin and the second terminal group at the bottom of the second bobbin, and a plurality of insulating parts respectively cover both sides of the second bobbin, and the second bobbin is integrated into the first bobbin At the top of the receiving groove, the coil wire of the second bobbin is extended and accommodated in the wire groove on the bottom side of the second bobbin, which can isolate the coil signal in the first bobbin from external noise, and achieve increased creepage distance and shielding The loop interference between the coils improves the structure of the transformer bobbin which simplifies the production process.

Description

Improved structure of transformer wire frame

The invention relates to a resonant transformer, in particular to an improved structure of a transformer wire frame that simplifies the production process, increases the creepage distance, and has an adjustable dew sense.

Conventional resonant transformers are limited by volume, weight, coil ratio, etc., and the leakage inductance cannot be adjusted arbitrarily, and cannot meet the use of power supply systems with different powers. Furthermore, in order to meet the needs of different leakage inductance power supply systems, the industry must The required leakage inductance is generated with the same structure, but the variable range of leakage inductance is often limited, which cannot fully satisfy the design. It can only be matched with the existing transformer through the compromise of the circuit and cannot effectively improve the performance of the resonant transformer;

Therefore, the applicant in this case proposed a resonant transformer structure with adjustable leakage inductance, such as the Republic of China Patent Publication No. I556273 patent; however, even for a resonant transformer, the manufacturing process is the same as that of a traditional transformer, that is, the primary coil is wound. Set it on the primary wire rack, and reserve the outgoing wire (that is, reserve a certain length of wire), then combine the primary wire rack and the secondary wire rack, and then connect the outgoing wire to the primary PIN pin on the secondary wire rack. In particular, there will be a set of auxiliary windings on the secondary winding of the resonant transformer, and the auxiliary winding is connected to the primary PIN pin, which leads to an increase in manufacturing time.

Therefore, some companies have developed a combined transformer. After the primary coil and the secondary coil are respectively wound on the wire frame, the wire frame is combined into a transformer, such as the patent case of the Republic of China Patent Publication No. I575542, but the patent The following deficiencies still remain to be improved:

1. The primary wire frame and the secondary wire frame of this patent have corresponding PIN pins. For example, the metal pins of the primary wire frame are arranged in a row on the left side of the transformer, and the metal pins of the secondary wire frame are on the transformer. The PIN pin of the secondary coil mentioned above also includes the PIN pin of the auxiliary coil, and the thickness of the PIN pin of the auxiliary coil and the secondary coil is different, which leads to the need for more secondary bobbins. Setting the PIN pin twice can not shorten the manufacturing time.

2. Although the primary bobbin is equipped with PIN pins, the auxiliary winding of the secondary winding still needs to reserve an outgoing wire. You must wait for the combination of the primary bobbin and the secondary bobbin, and then connect the auxiliary winding outgoing wire to the primary The PIN pin of the wire frame cannot shorten the production time of the resonant transformer.

3. The bottom of the primary wire frame has a ㄇ-shaped structure. After the secondary wire frame is combined with the primary wire frame, the creepage distance will not increase, and there is a small distance at the junction of the two wire frames. Poor insulation will occur.

In view of the above-mentioned shortcomings of conventional use, the inventors conducted research and improvement on the aforementioned shortcomings and how to simplify the production process of resonant transformers, and finally the present invention was produced.

The main purpose of the present invention is to provide an improved structure of a transformer bobbin that simplifies the production process and increases the creepage distance.

The secondary objective of the present invention is to provide an improved structure of the transformer bobbin which can be directly connected to the PIN pin after the coil is wound on the bobbin, and does not need to reserve an outgoing wire.

Another object of the present invention is to provide an improved structure of transformer bobbin with adjustable leakage inductance. .

Another object of the present invention is to provide an improved structure of a transformer bobbin used as a diamagnetic transformer when the leakage is extremely low. .

In order to achieve the above objectives and effects, the technical means adopted by the present invention include: a first wire frame, a second wire frame, a plurality of magnetic conductive sheets, and a plurality of insulators, among which:

The first wire frame is provided with a first through hole and a first wire groove, the top of the first wire frame is provided with a plurality of grooves, and a wall plate is arranged around the top to form a receiving groove, and the bottom of the first wire frame One side is provided with a plurality of wiring slots, and the other side is extended with a first connecting seat and provided with a connecting portion, and a first terminal group is provided on both sides of the connecting portion.

The magnetic conductive sheets are respectively arranged in the grooves.

The second wire frame is provided with a second through hole and a second wire groove passing through, a second connecting seat extends from the bottom side of the second wire frame and a wire groove is provided, and a second terminal set is provided on both sides of the wire groove ;as well as,

The insulating member respectively covers both sides of the second wire frame.

Thereby, the first bobbin and the second bobbin are respectively wound with a coil at the same time, and the coils are respectively connected to the first terminal group and the second terminal group. The second wire frame is assembled into the receiving slot, and the coil wire of the second wire frame is extended and then received in the wire groove, which can isolate the coil signal in the first wire frame from external noise, increase the creepage distance and shield the coil Interference between the loops, the improved structure of the transformer wire frame to simplify the production process.

According to the above structure, the top and bottom of the first wire frame are respectively provided with a first top plate and a first bottom plate, and the first line groove is provided between the first bottom plate and the second bottom plate, wherein: the surface of the first top plate is provided The grooves, and the wall plate is arranged around the periphery of the first top plate, the receiving groove is formed between the wall plate and the first top plate; and the first bottom plate is provided with the wiring grooves on one side and the other side extends The first connecting seat and the connecting portion.

According to the above structure, a second top plate and a second bottom plate are respectively extended from the top and bottom of the second wire frame, the second line groove is formed between the second top plate and the second bottom plate, and one side of the second bottom plate extends the The second connecting seat and the wire groove; and, a heat dissipation space is formed between the second bottom plate and the second connecting seat.

According to the above structure, the connecting portion is provided with a symmetrical first fixing portion, the second connecting seat is provided with a second fixing portion on both sides, and the second connecting seat is assembled into the connecting portion so that the first fixing portion Combine with the second fixing part to achieve a structure for positioning during assembly and increasing mechanical strength after assembly.

According to the above structure, the bottom side of the second connecting seat is provided with a third fixing part connected to the second bottom plate, and the bottom surface of the other side is provided with a plurality of partition plates, and the top side of the first wire frame is provided with a A gap, the second wire frame is assembled into the receiving groove, and the third fixing part is assembled into the gap, so as to achieve a structure for positioning during assembly and increasing mechanical strength after assembly.

According to the above structure, a plurality of recesses are provided in the wire groove.

According to the above structure, the first connecting seat is provided with a third end group subgroup.

According to the above structure, the coil includes: a first coil wound in the first wire slot and extending a first outlet end and a second outlet end respectively, and the first outlet end extension group Into the wiring slot, the second outlet end extends to connect to the first terminal set; and, a second coil is wound in the second wire slot and extends a third outlet end, the third outlet end The second terminal group is connected along the wire groove.

According to the above structure, it further includes an iron core group with two symmetrically arranged first iron core and second iron core. The first iron core and the second iron core have a surface at both ends of one side. The side wall part has a convex part inside the side wall parts, and the convex part passes through the first through hole and the second through hole respectively; thereby, after the first wire frame and the second wire frame are combined, the first The iron core is sleeved on the top of the first bobbin, and the second iron core is sleeved on the bottom of the second bobbin, so that the transformer can generate leakage inductance of required strength through the magnetic conductive sheet.

In order to obtain a more detailed understanding of the above-mentioned purposes, effects and features of the present invention, the descriptions are as follows according to the drawings:

Referring to Figures 1 to 3, it can be seen that the structure of the present invention mainly includes: a first wire frame 1, a plurality of magnetic conductive sheets 2, a second wire frame 3, a plurality of insulators 4, and a first coil 5. , A second coil 6, and an iron core set 7. It should be noted that the present invention is mainly aimed at the structural improvement of the first bobbin 1 and the second bobbin 3, including but not limited to the first bobbin 1 combined guide The combined structure of the magnetic sheet 3, the second bobbin 3 combined with the insulator 4, and the first bobbin 1 combined with the second bobbin 3; and the description of the first coil 5, the second coil 6, and the iron core group 7 , Is to let Jun Examination Committee be able to understand the structure of the complete resonant transformer combined with the present invention, which will be explained first.

The first wire frame 1 is provided with a first through hole 10 therethrough. The top and bottom of the first wire frame 1 are respectively provided with a first top plate 11 and a first bottom plate 12, between the first bottom plate 12 and the second bottom plate 32 There is a first wire slot 13 in which:

The surface of the first top plate 11 is provided with a plurality of grooves 111, and a wall plate 112 is ringed around the first top plate 11, a receiving groove 113 is formed between the wall plate 112 and the first top plate 11, and one side of the first top plate 11 is provided Gap 114; and,

A plurality of wiring slots 121 and a third terminal group 122 are provided on one side of the first base plate 12, and a first connecting seat 14 and a connecting portion 141 are extended on the other side. The connecting portion 141 is provided with a symmetrical first fixing portion 143.

The magnetic conductive sheets 2 are respectively arranged in the grooves 111 on the top of the first top plate 11.

The second wire frame 3 is provided with a second through hole 30 passing through it. The top and bottom of the second wire frame 3 respectively extend a second top plate 31 and a second bottom plate 32. Between the second top plate 31 and the second bottom plate 32 there is a In the second wire groove 33, a second connecting seat 34 and a wire groove 341 extend from one side of the second bottom plate 32, a heat dissipation space 320 is formed between the second bottom plate 32 and the second connecting seat 34, and two connecting seats 34 A second fixing portion 343 is provided on one side, a third fixing portion 344 connected to the second bottom plate 32 is provided on one side of the second connecting seat 34, and a plurality of partition plates 346 are provided on the bottom surface of the other side, and a wire groove 341 is provided with a plurality of recesses 345.

Each insulating member 4 does not cover both sides of the second wire frame 3.

The first coil 5 is wound in the first wire slot 13 and extends a first wire outlet 51 and a second wire outlet 52 respectively.

The second coil 6 is wound in the second wire slot 33 and extends a third outlet end 61. as well as,

The iron core group 7 has two symmetrically arranged first iron core 71 and a second iron core 72. The first iron core 71 and the second iron core 72 have side wall portions 711 and 721 at both ends of one side of the surface. There is a convex portion 712, 722 inside between the side wall portions 711, 721.

When the above components are combined (please refer to Fig. 4 for assistance), the first coil 5 is wound in the first wire slot 13 of the first bobbin 1, and the first outlet end 51 is extended and assembled into the wire slot of the first bobbin 1 121, the second outlet end 52 is connected to the first terminal group 142 along the surface of the first connecting seat 14; at the same time, the second coil 6 is wound in the second wire slot 33 of the second bobbin 3, and the third outlet The end 61 is connected to the second terminal set 342 along the wire groove 341; because the wire groove 341 is provided with a plurality of recesses 345, when the third outlet end 61 is a plurality of wires, each wire can be separately received in the recess 345 Inside.

It should be noted that the first coil 5 is wound on the first bobbin 1 and the second coil 6 is wound on the second bobbin 3 because the first bobbin 1 and the second bobbin 3 are independent Therefore, the coil can be wound independently; and the first outlet end 51 and the second outlet end 52 of the first coil 5 can be directly connected to the wiring slot 121, the first terminal group 142, and the second The third outlet end 61 of the coil 6 can be directly connected to the second terminal group 342; a structure that simplifies the production process and reduces the production time is achieved.

The magnetic conductive sheets 2 are respectively arranged in the receiving grooves 113 of the first top plate 12, and the insulators 4 are respectively covered on both sides of the second wire frame 3; that is, the insulators 4 are respectively connected to the second wire frame 3 The top surface of the first top plate 31 and the bottom surface of the second bottom plate 32 are such that the insulating member 4 can cover the second wire groove 33 of the second wire frame 3 to achieve a structure that increases the creepage distance.

After the above combination steps are completed (please refer to Figure 5 for assistance), that is, the first bobbin 1 completes the winding of the first coil 5 and inserts the magnetic conductive sheet 2; and the second bobbin 3 completes the winding of the second coil 6 In addition, the insulating member 4 is connected, and the second wire frame 3 is continuously assembled into the receiving groove 113 on the top of the first wire frame 1. It should be noted that after the first wire frame 1 and the second wire frame 3 are combined, the present invention has the following technical features of increasing the creepage distance and strengthening the structure.

1. The second connecting seat 34 on the side of the second bottom plate is assembled into the connecting portion 141 of the first connecting seat 14 on the side of the first bottom plate 12, and the first fixing portion 143 in the connecting portion 14 and the second connecting seat The second fixing portions 343 of 34 are combined with each other to achieve a structure for positioning during assembly and increasing mechanical strength after assembly.

2. The third fixing portion 344 at the bottom of the second connecting seat 34 is sleeved into the notch 114 of the first top plate 11 to achieve a structure for positioning during assembly and increasing mechanical strength after assembly.

3. The third outlet end 61 of the second coil 6 is connected to the second terminal group 342 along the wire groove 341. Therefore, the wire groove 341 can shield the signal interference from the first coil 5 and the second outlet end 52 to achieve The third outlet terminal 61 is a structure capable of shielding and isolating signal interference.

4. The partition plate 346 at the bottom of the second connecting seat 34 can increase the creepage distance between the first terminal group 142 and the second terminal group 342.

Finally (please refer to Figure 6 for assistance), the first iron core 71 of the iron core group 7 is sleeved on the top of the first wire frame 1, and the second iron core 72 is sleeved on the bottom of the second wire frame 3, and the convex portions 712, 722 passes through the first through hole 10 and the second through hole 30 and abuts against each other, and the two side wall portions 711 and 721 respectively cover both sides of the first wire frame 1 and abut against each other, so that the iron core group 7 forms a complete magnetic path , Complete the assembly of the present invention.

In this way, the present invention uses the magnetic sheet 2 to change the coupling coefficient between the first coil 5 and the second coil 6. Since the magnetic sheet 2 is magnetically permeable, the magnetic sheet 2 is used to guide the leakage flux back to the iron The core group 7 can completely avoid the generation of eddy current loss, so the efficiency can be greatly improved. Furthermore, the magnetic sheet 2 is arranged between the first coil 5 and the second coil 6, and the required leakage inductance is generated by the magnetic interference of the magnetic sheet 2; it should be noted that the thickness of the magnetic sheet 2 is related to the resonance transformer. The leakage inductance is proportional to the leakage inductance, and the permeability of the magnetic sheet 2 is proportional to the leakage inductance generated by the resonant transformer; when the magnetic sheet 2 is not provided in the resonant transformer, the leakage inductance generated by the resonant transformer is quite small. Used as a diamagnetic transformer.

Based on the above, the improved structure of the transformer bobbin of the present invention is indeed a novel and progressive invention, and I filed an application for a patent for invention in accordance with the law; however, the content of the above description is only a description of the preferred embodiments of the present invention. Any changes, modifications, alterations or equivalent substitutions extended by the technical means and scope of the present invention shall also fall within the scope of the patent application of the present invention.

1: The first wire frame 10: The first perforation 11: The first top plate 111: Groove 112: siding 113: Containment Slot 114: gap 12: The first floor 121: Wiring slot 122: third end group subgroup 13: The first trunking 14: The first connecting seat 141: Connection 142: The first terminal group 143: The first fixed part 144: The third end group subgroup 2: Magnetic conductive sheet 3: The second wire rack 30: second perforation 31: The second top plate 32: second bottom plate 320: cooling space 33: The second trunking 34: The second connecting seat 341: Wire Groove 342: The second terminal group 343: second fixed part 344: third fixed part 345: Concave 346: divider 4: Insulation 5: The first coil 51: The first outlet 52: The second outlet 6: The second coil 61: Third outlet 7: Iron core group 71: The first core 711: side wall 712: Convex 72: second core 721: side wall 722: Convex

[Figure 1] is a perspective exploded view of a preferred embodiment of the present invention. [Figure 2] is another perspective view of some of the components in [Figure 1]. [Picture 3] is the front view of some components in [Picture 1]. [Figure 4] is a combination diagram 1 of the preferred embodiment of the present invention. [Figure 5] is the second combination diagram of the preferred embodiment of the present invention. [Figure 6] is a combined perspective view of the preferred embodiment of the present invention.

1: The first wire frame

10: The first perforation

11: The first top plate

111: Groove

112: siding

113: Containment Slot

114: gap

12: The first floor

121: Wiring slot

13: The first trunking

14: The first connecting seat

141: Connection

142: The first terminal group

143: The first fixed part

2: Magnetic conductive sheet

3: The second wire rack

30: second perforation

31: The second top plate

32: second bottom plate

320: cooling space

33: The second trunking

34: The second connecting seat

341: Wire Groove

342: The second terminal group

343: second fixed part

345: Concave

4: Insulation

5: The first coil

51: The first outlet

52: The second outlet

6: The second coil

61: Third outlet

7: Iron core group

71: The first core

711: side wall

712: Convex

72: second core

721: side wall

722: Convex

Claims (10)

An improved structure of a transformer wire frame, which at least includes: A first wire frame is provided with a first perforation and a first wire groove passing through. The top of the first wire frame is provided with a plurality of grooves, and a wall plate is arranged around the top to form a receiving groove. The first wire frame A plurality of wiring slots are provided on one side of the bottom, and a first connecting seat is extended on the other side and a connecting portion is provided, and a first terminal group is provided on both sides of the connecting portion; A plurality of magnetic conductive sheets are respectively arranged in the groove; A second wire frame is provided with a second through hole and a second wire groove. The bottom side of the second wire frame extends a second connecting seat and is provided with a wire groove. The wire groove is provided with a second terminal on both sides Group; A plurality of insulating parts respectively cover both sides of the second wire frame; Thereby, the first bobbin and the second bobbin are respectively wound with a coil at the same time, and the coils are respectively connected to the first terminal group and the second terminal group. The second wire frame is assembled into the receiving groove, and the coil wire of the second wire frame is extended and then contained in the wire groove, which can isolate the coil signal in the first wire frame from external noise, increase the creepage distance and shield the coil Interference between the loop and the improved structure of the transformer wire frame to simplify the production process. The improved structure of the transformer wire frame according to claim 1, wherein the top and bottom of the first wire frame are respectively provided with a first top plate and a first bottom plate, and the first wire slot is provided between the first bottom plate and the second bottom plate ,in: The surface of the first top board is provided with the grooves, the wall board is arranged around the periphery of the first top board, and the receiving groove is formed between the wall board and the first top board; and, One side of the first bottom plate is provided with the connecting grooves, and the other side extends the first connecting seat and the connecting portion. The improved structure of the transformer bobbin according to claim 1, wherein the top and bottom of the second bobbin respectively extend a second top plate and a second bottom plate, and the second line groove is provided between the second top plate and the second bottom plate , One side of the second bottom plate extends the second connecting seat and the wire groove. According to the improved structure of the transformer bobbin of claim 3, a heat dissipation space is formed between the second bottom plate and the second connecting seat. The improved structure of the transformer bobbin according to claim 1, wherein a symmetrical first fixing part is arranged in the connecting part, a second fixing part is arranged on both sides of the second connecting seat, and the second connecting seat is integrated into the In the wiring groove, the first fixing part and the second fixing part are combined with each other to achieve a structure that is positioned during assembly and increases mechanical strength after assembly. The improved structure of the transformer bobbin according to claim 1, wherein a third fixing part connected to the second bottom plate is provided on one side of the bottom of the second connecting seat, and a plurality of partition plates are provided on the bottom surface of the other side; A notch is provided on the top side of the first wire frame, and the second wire frame is assembled into the accommodating groove, so that the third fixing part is assembled into the notch to achieve a structure for positioning during assembly and increasing mechanical strength after assembly. The improved structure of the transformer bobbin according to claim 1, wherein a plurality of recesses are provided in the wire groove. According to the improved structure of the transformer bobbin of claim 1, wherein the first connection base is provided with a third terminal group subgroup. The improved structure of the transformer bobbin according to claim 1, wherein the coil includes: A first coil is wound in the first wire slot, and respectively extends a first wire outlet end and a second wire outlet end, the first wire outlet end extends into the wiring slot, and the second wire outlet end Extend the connection to the first terminal group; and, A second coil is wound in the second wire slot and extends a third wire-out end, and the third wire-out end is connected to the second terminal group along the wire slot. The improved structure of the transformer bobbin as described in claim 1, further comprising an iron core group with two symmetrically arranged a first iron core and a second iron core, the first iron core and the second iron core one There is a side wall part at both ends of the surface of the side, and a convex part is arranged inside the side wall parts, and the convex part passes through the first through hole and the second through hole respectively; thereby, the first wire frame and the second After the two wire frames are combined, the first iron core is sleeved on the top of the first wire frame, and the second iron core is sleeved on the bottom of the second wire frame, so that the transformer can generate leakage inductance of required strength through the magnetic sheet.

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