CN1206672C - Transformer winding structure - Google Patents

Abstract

The present invention provides a transformer winding structure, which includes: a first bobbin component, including a first side plate, a second side plate and a first bobbin, wherein the first bobbin is located between the first side plate and the second side plate, and the second side plate has a first connecting device; and a second bobbin component, including a first end plate, a second end plate and a second bobbin, wherein the second bobbin is located between the first end plate and the second end plate, and the second end plate has a second connecting device; wherein the first connecting device and the second connecting device are mutually engaged to define a third bobbin.

Description

Transformer winding structure

technical field

The invention relates to a transformer winding structure, in particular to an easy-to-assemble transformer winding structure.

Background technique

A commonly used assembleable transformer winding structure, as shown in FIG. 1 , is mainly composed of two primary bobbin pieces 11 , one secondary bobbin piece 12 and two shields 13 . The primary side component 11 mainly includes a first bobbin 110 and end plates 111, 112 located on two sides of the first bobbin 110, wherein the first bobbin 110 is used to wind a primary coil (primary coil, not shown) ); the secondary side component 12 mainly includes a second bobbin 120 and end flanges 122 on both sides of the second bobbin 120, wherein the second bobbin 120 is used to wind the secondary winding (secondary coil, not shown). The end plates 112, 122 are respectively connected to the two sides of the shielding cover 13. There is a base 1110 under the end plate 111 for soldering a primary pin lead (not shown) and a secondary terminal (secondary pin lead, not shown). ) so that the ends of the primary and secondary windings are soldered thereto. Finally, an iron core (not shown) is covered on the combined structure of the primary-side part 11 and the secondary-side part 12 , that is, the structure of a commonly used assembleable transformer is completed.

Although the above-mentioned structure can comply with the "creepage and clearance distance (creepage and clearance distance)" electrical safety regulations for transformers in various countries, the assembly of this transformer thermal group structure requires five independent assembly units (that is, two primary side parts 11, one The secondary side component 12 and the two shielding covers 13) have the disadvantages of high material cost and labor-intensive assembly.

Contents of the invention

One aspect of the present invention proposes a transformer winding structure, which includes:

The first bobbin component includes a first side plate, a second side plate and a first bobbin, wherein the first bobbin is located between the first side plate and the second side plate, and the second There is a first connecting device on the side plate; and

The second bobbin component includes a first end plate, a second end plate and a second bobbin, wherein the second bobbin is located between the first end plate and the second end plate, and the second The end plate has a second connecting device;

Wherein, the first connection device and the second connection device engage with each other to define a third bobbin.

The transformer winding structure as described above, wherein the first bobbin part and the second bobbin part are made of insulating material.

The transformer winding structure described above, wherein the first bobbin and the second bobbin are respectively wound with a primary side winding.

The transformer winding structure as described above, wherein the third bobbin is wound with a secondary side winding.

The transformer winding structure as described above, wherein the third bobbin is further wound with a primary side winding.

The transformer winding structure as described above, wherein the first connecting device and the second connecting device are opposite first protruding rings and second protruding rings respectively, and the first protruding ring and the second protruding ring are engaged to define out the third bobbin.

The transformer winding structure as described above, wherein the second protruding ring includes an upper protruding ring and a lower protruding ring, the inner diameter of the first protruding ring is substantially equal to the outer diameter of the upper protruding ring, and the outer diameter of the first protruding ring The diameter is substantially equal to the outer diameter of the lower protruding ring.

The transformer winding structure as described above, wherein the first connecting device and the second connecting device are respectively a set of opposite sleeves and a stud.

As mentioned in the transformer winding structure, wherein the first connection device and the second connection device are two opposite first protruding pieces and two second protruding pieces respectively, so as to enhance the left and right positioning effect.

According to the transformer winding structure, it further includes an iron core assembly.

The transformer winding structure as described above, wherein the core assembly is an EI core (EI-core) or an EE core (EE-core).

The transformer winding structure as described above, wherein the first side plate has a first core positioning device.

The transformer winding structure as described above, wherein the first core positioning device is a first groove formed by two first protruding plates.

The transformer winding structure as described above, wherein the first end plate has a second core positioning device.

The transformer winding structure as described above, wherein the second core positioning device is a second groove formed by two second protruding plates.

In the transformer winding structure described above, a first base and a second base are respectively provided under the first side plate and the first end plate for placing a plurality of conducting terminals.

The transformer winding structure as described above, wherein the first side plate and the first end plate are respectively provided with one less column extending downward.

Another aspect of the present invention provides a transformer winding structure, which includes:

The first bobbin component includes a first side plate, a second side plate and a first bobbin, wherein the first bobbin is located between the first side plate and the second side plate, and the first side The plate has a first core positioning device and a first base, and the second side plate has a first connecting device; and

The second bobbin component includes a first end plate, a second end plate and a second bobbin, wherein the second bobbin is located between the first end plate and the second end plate, and the first end A second core positioning device and a second base are provided on the board, and a second connecting device is provided on the second end board;

Wherein, the first connecting device and the second connecting device are engaged with each other to define a third bobbin, and the first core positioning device and the second core positioning device are respectively used to make the first core unit and the second core unit Preliminary positioning of the core unit.

The transformer winding structure as described above, wherein the first bobbin part and the second bobbin part are made of insulating material.

The transformer winding structure as described above, wherein the first bobbin and the second bobbin are respectively wound with a primary side winding, and the third bobbin is wound with a secondary side winding.

The transformer winding structure as described above, wherein the first connecting device and the second connecting device are opposite first protruding rings and second protruding rings respectively, and the first protruding ring and the second protruding ring are engaged to define out the third bobbin.

The transformer winding structure as described above, wherein the second protruding ring includes an upper protruding ring and a lower protruding ring, the inner diameter of the first protruding ring is substantially equal to the outer diameter of the upper protruding ring, and the outer diameter of the first protruding ring The diameter is substantially equal to the outer diameter of the lower protruding ring.

The transformer winding structure as described above, wherein the first connecting device and the second connecting device are respectively a set of opposite sleeves and a stud.

As mentioned in the transformer winding structure, wherein the first connection device and the second connection device are two opposite first protruding pieces and two second protruding pieces respectively, so as to enhance the left and right positioning effect.

The transformer winding structure as described above, wherein the first core positioning device is a first groove formed by two first protruding plates.

The transformer winding structure as described above, wherein the second core positioning device is a second groove formed by two second protruding plates.

The transformer winding structure as described above, wherein the first side plate and the first end plate are respectively provided with one less column extending downward.

Description of drawings

With the help of the following drawings and detailed descriptions, a deeper understanding will be obtained:

Figure 1 is a commonly used assembleable transformer winding structure;

2 is a schematic diagram of the assembly of the first bobbin part and the second bobbin part of the transformer winding structure of the present invention;

3 is a sectional view of the first bobbin part and the second bobbin part of the transformer winding structure of the present invention;

Fig. 4 is a perspective view of the combination of the first bobbin part and the second bobbin part of the transformer winding structure of the present invention and the winding of the wire;

Figure 5 is an assembly diagram of the combined transformer winding structure and EE core;

Fig. 6 is a combination diagram of the combined transformer winding structure and EE core.

Detailed ways

Please see FIG. 2 and FIG. 3 , the transformer winding structure of the present invention is mainly composed of a first bobbin part 2 and a second bobbin part 3 .

The first bobbin component 2 includes a first side plate 21, a second side plate 22 and a first bobbin 23, wherein the first bobbin 23 is located between the first side plate 21 and the second side plate 22, and The second side plate 22 has first connecting devices 221-225. The second bobbin component 3 includes a first end plate 31, a second end plate 32 and a second bobbin 33, wherein the second bobbin 33 is located between the first end plate 31 and the second end plate 32, and The second end plate 32 has second connection means 321-325 thereon. The first bobbin member 2 and the second bobbin member 3 have a first through hole 24 and a second through hole 34 at their centers, respectively.

The first connecting device mainly includes a first protruding ring 221 (extending from the first through hole 24), a sleeve 222 (protruding from the second side plate 22), two first tabs 223, 224 (extending from the second side plate 22). protruding from the edge of the side plate 22) and a plurality of first protruding rods 225 (at the bottom of the second side plate 22); ring, including an upper protruding ring 3211 and a lower protruding ring 3212), a protruding post 322 (protruding from the top of the second end plate 32), two second protruding pieces 323, 324 (protruding from the edge of the second end plate 32) and a plurality of The second protruding rod 325 (at the bottom of the second end plate 32 ). The inner diameter of the first protrusion ring 221 is substantially equal to the outer diameter of the protrusion ring 3211 above the second protrusion ring 321, and the outer diameter of the first protrusion ring 221 is substantially equal to the outer diameter of the protrusion ring 3212 below the second protrusion ring 321, Therefore, when the first protruding ring 221 and the second protruding ring 321 are engaged with each other, the protruding ring 3212 under the first protruding ring 221 and the second protruding ring 321 can define a third bobbin (not shown). The sleeve 222 engages with the stud 322 to enhance the vertical positioning effect. The two first protruding pieces 223, 224 and the two second protruding pieces 323, 324 are opposite to each other and engaged with each other, so as to enhance the left and right positioning effect. The first protruding rod 225 and the second protruding rod 325 are inserted into the gaps between the protruding blocks 320 at the bottom of the second end plate 32 and between the protruding blocks 220 at the bottom of the second side plate 22 to enhance the vertical positioning effect.

The present invention is characterized in that the protruding ring 3212 under the first protruding ring 221 and/or the second protruding ring 321 can be pre-wrapped with several turns of winding, such as a secondary side winding and/or further winding a primary side winding, Therefore, after the first bobbin part 2 is combined with the second bobbin part 3, the winding wire 41 has been wound on the third bobbin (as shown in FIG. 4 ). Furthermore, the first bobbin 23 and the second bobbin 33 can be respectively wound with the primary side windings 42 and 43 in advance or after the first bobbin part 2 and the second bobbin part 3 are combined.

It can also be seen from FIG. 4 that a first base 211 and a second base 311 are respectively provided under the first side plate 21 and the first end plate 31 for placing a plurality of conducting terminals 411 , 421 , 431 . The ends of winding wires 41 , 42 , 43 are welded to lead terminals 411 , 421 , 431 respectively, so that when the transformer winding structure 4 is mounted on a circuit board (not shown), it can be electrically connected with the circuit board. Furthermore, the first side plate 21 and the first end plate 31 are respectively provided with at least one first column foot (not shown) extending downward and at least one second column foot 312 extending downward, so that the auxiliary transformer winding structure 4 can be inserted. Corresponding alignment holes on the circuit board (not shown).

Figure 5 shows the assembly diagram of the combined transformer winding structure and EE core. Two first protruding plates 213, 214 (the first groove 215 is formed therebetween) and two second protruding plates 313, 314 (the second groove 315 is formed therebetween) are respectively arranged on the first side plate 21 and the first end plate 31. Among them, the EE type The two core units 51 and 52 of the core (EE-core) can respectively insert the central protrusions 511 and 512 into the first through hole 24 (see FIG. 2 ) and the second through hole 34, and the core units 51 and 52 are respectively placed In the first groove 215 and the second groove 315, so as to be assisted by the first protruding plates 213, 214 and the second protruding plates 313, 314, the effect of vertical positioning is achieved. Of course, the core units 51, 52 can also be respectively EI type iron core (EI-core). Finally, the transformer structure of this case can be completed by gluing the core units 51 and 52 together or covering the outside with tape.

The present invention is characterized in that the first side plate 21 on the first bobbin part 2, the second side plate 22, the first bobbin 23, the first base 211, the first connecting means 221-225, the first Components such as the column feet and the first protruding plates 213 and 214 are integrally formed by plastic injection. And the corresponding components on the second bobbin part 3 are also the same. This kind of insulation effect can meet the electrical safety regulations of "creepage and clearance distance".

The transformer winding structure of the present invention has great progress relative to the known technology of Fig. 1:

1. The transformer bobbin structure of the present invention only needs two assembly units (the first bobbin part 2 and the second bobbin part 3), compared to the known technology that requires five independent assembly units ( That is, two primary side components 11, one secondary side component 12 and two shielding covers 13), which have advantages in production cost and material control.

2. The first bobbin part 2 and the second bobbin part 3 of the transformer bobbin structure of the present invention have both windings (the first bobbin 23, the second bobbin 33 and the third bobbin ), core positioning (first protruding plates 213, 214 and second protruding plates 313, 314), clamping (first connecting devices 221-225 and second connecting devices 321-325), positioning on the circuit board (first column feet, The second column foot 312) function.

In summary, the transformer winding structure provided by the present invention has the characteristics of good positioning effect, cost saving, simple manufacture and compliance with safety regulations, and can avoid the shortcomings encountered in the known technology. It is a novel, progressive and practical invention.

The present invention can be modified in various ways by those skilled in the art without departing from the scope of the appended claims.

Claims (16)

1. A transformer winding structure comprising: The first bobbin component includes a first side plate, a second side plate and a first bobbin, wherein the first bobbin is located between the first side plate and the second side plate, and the second There is a first connecting device on the side plate; and The second bobbin component includes a first end plate, a second end plate and a second bobbin, wherein the second bobbin is located between the first end plate and the second end plate, and the second There is a second connection device on the end plate; Wherein, the first connection device and the second connection device engage with each other to define a third bobbin. 2. The transformer winding structure according to claim 1, wherein the first bobbin part and the second bobbin part are made of insulating material. 3 . The transformer winding structure as claimed in claim 1 , wherein the first bobbin and the second bobbin are respectively wound with a primary winding. 4 . 4 . The transformer winding structure as claimed in claim 3 , wherein the third bobbin is wound with a secondary winding, and is further wound with a primary winding. 5. The transformer winding structure according to claim 1, wherein the first connecting device and the second connecting device are respectively opposite first protruding rings and second protruding rings, and the first protruding rings and the second protruding rings are The second protruding ring is engaged to define the third bobbin. 6. The transformer winding structure according to claim 5, wherein the second protruding ring comprises an upper protruding ring and a lower protruding ring, the inner diameter of the first protruding ring is equal to the outer diameter of the upper protruding ring, and the The outer diameter of the first protruding ring is equal to the outer diameter of the lower protruding ring. 7 . The transformer winding structure as claimed in claim 1 , wherein the first connection device and the second connection device are respectively a sleeve and a protruding post opposite to each other. 8. The transformer winding structure according to claim 1, wherein the first connection device and the second connection device are two opposite first protruding pieces and two second protruding pieces respectively, so as to enhance left and right positioning Effect. 9. The transformer winding structure as claimed in claim 1, further comprising a core assembly. 10. The transformer winding structure according to claim 9, wherein the core assembly is an EI core or an EE core. 11. The transformer winding structure according to claim 9, wherein the first side plate has a first iron core positioning device, and the first iron core positioning device is a first groove formed by two first protruding plates groove. 12. The transformer winding structure according to claim 9, wherein the first end plate has a second core positioning device, and the second core positioning device is a second groove formed by two second protruding plates groove. 13. The transformer winding structure according to claim 1, wherein a first base and a second base are respectively provided under the first side plate and the first end plate for placing a plurality of conducting terminals . 14 . The transformer winding structure according to claim 1 , wherein the first side plate and the first end plate are respectively provided with at least one column extending downward. 15. A transformer winding structure comprising: The first bobbin component includes a first side plate, a second side plate and a first bobbin, wherein the first bobbin is located between the first side plate and the second side plate, and the first bobbin The side plate has a first core positioning device and a first base, and the second side plate has a first connecting device; and The second bobbin component includes a first end plate, a second end plate and a second bobbin, wherein the second bobbin is located between the first end plate and the second end plate, and the first end A second core positioning device and a second base are provided on the board, and a second connecting device is provided on the second end board; Wherein, the first connecting device and the second connecting device are engaged with each other to define a third bobbin, and the first core positioning device and the second core positioning device are used to make the first core unit and the second core positioning device respectively Preliminary positioning of the second core unit. 16. The transformer winding structure according to claim 15, wherein the first bobbin and the second bobbin are respectively wound with a primary winding, and the third bobbin is wound with a secondary winding. Side winding.

Images