TW201805967A - Detachable transformer comprising a first reel, a primary side winding, a second reel, a secondary side winding and a magnetic core group - Google Patents

Abstract

This invention discloses a detachable transformer comprising a first reel, a primary side winding, a second reel, a secondary side winding and a magnetic core group. The magnetic core group is annularly provided with the first reel and the second reel and is inserted into the first reel and the second reel. A first winding groove and a mounting groove are respectively formed in the top and bottom of the first reel. The first winding groove is provided with the primary side winding, and a first opening communicating with an external space is formed in one side of the mounting groove. A second winding groove is formed in the top of the second reel, and the second winding groove is provided with the secondary side winding. The second reel is arranged in the mounting groove by the first opening, the second reel is detachably combined with the first reel, and the second reel is replaced according to an output requirement, so that the manufacturing cost is reduced.

Description

Detachable transformer

The invention relates to a transformer, and in particular to a detachable transformer.

With the evolution and development of electronic products, different electronic products need to be driven by different power supply devices; therefore, manufacturers of power supply devices have actively tried to develop various transformer structures for corresponding applications in various power supply devices.

A simple transformer is composed of a first electrical conductor and a second electrical conductor. When an indefinite amount of current passes through the first electrical conductor, a variable magnetic field is generated on the first electrical conductor; then, based on electromagnetic The principle of mutual inductance, this changing magnetic field will cause an induced electromotive force to be generated on the second conductor, and then a potential difference will be formed between the first conductor and the second conductor, thereby achieving the effect of changing the magnitude of the voltage. With the evolution of technology products, in addition to being used alone as a device to change the electromotive force, the transformer can also be miniaturized and installed in various electronic devices or soldered to circuit boards. Therefore, the structure of the transformer is continuously improved, and basically consists of a base, a set of primary-side coils, a set of secondary-side coils, and an iron core group. Transformers usually have an output voltage of 2.8 ~ 48 volts and a large output current range. If the winding of the transformer is formed by a coil, it is difficult to manufacture a winding corresponding to a large current, and the volume of the output pin is large, and it is not easy to manufacture. Furthermore, the wires used for high currents are thick and difficult to wind on the pins, and the thick wires wound on the pins will make the transformer high. Even if a thick wire is wound around the pin, so that a large current passes through the circuit board, it will still cause loss. In addition, in a low profile power supply, there is no magnetic core on the top of the horizontal transformer, so the transformer and the conductive case above it will cause eddy current loss.

Therefore, the present invention is directed to the above-mentioned problems, and proposes a detachable transformer to solve the problems caused by the conventional knowledge.

The main object of the present invention is to provide a detachable transformer, which is installed in the mounting groove of the second winding frame to the first winding frame to form a detachable vertical combination, and then replace the first Two winding frames, and achieve the purpose of rapid manufacturing, reduce costs, miniaturize mass production and reduce eddy current loss.

To achieve the above object, the present invention provides a detachable transformer, which includes a first winding frame, a primary winding, a second winding frame, a secondary winding, and a magnetic core group. The side windings are formed by wires. The first winding frame has a first through hole penetrating through the center of the first winding frame. The top and bottom of the first winding frame have a first winding groove and a mounting groove, respectively. The first winding groove surrounds the first through hole and is provided with a primary winding. The mounting groove communicates with the first through hole, and one side of the mounting groove has a first opening communicating with the external space. A part of the edge of the bottom of the first winding frame extends horizontally to form a first baffle portion, and the first baffle portion abuts the bottom of the second winding frame. The center of the second winding frame has a second through hole penetrating through itself. The top of the second winding frame has a second winding groove. The second winding groove surrounds the second through hole and is provided with a secondary winding. . The second winding frame is disposed in the mounting groove through the first opening, and the first through hole communicates with the second through hole, so that the second winding frame and the first winding frame form a detachable combination. A part of the edge of the bottom of the second winding frame extends vertically downward to form a second baffle portion, and the second baffle portion is abutted against the first baffle portion. A plurality of notches and pins are provided on an edge of the second winding frame corresponding to the first opening. The magnetic core group is provided with a first winding frame and a second winding frame, and extends into the first through hole and the second through hole.

The magnetic core group further includes a first magnetic core and a second magnetic core. The first magnetic core is close to the first winding frame and extends into the first through hole, and the second magnetic core is close to the second winding frame and extends into the second through hole and is connected to the first magnetic core. To surround the first bobbin and the second bobbin.

In the first embodiment, the second winding groove is an annular groove, and the secondary winding is formed by a wire.

In the second embodiment, one side of the second winding groove further has a second opening communicating with the external space, and the first opening communicates with the second opening. The secondary winding further includes a first conductive sheet, a second conductive sheet, a third conductive sheet, and a fourth conductive sheet. For example, the first conductive sheet, the second conductive sheet, the third conductive sheet, and the first conductive sheet The four conductive sheets are copper sheets. The first conductive sheet has a first bent portion, and two ends thereof are extended to form a first electrode portion and a second electrode portion, respectively. The height of the first electrode portion is higher than that of the second electrode portion. The second electrode portion is respectively provided with a first lock hole and a second lock hole. The first bent portion is provided in the second winding groove, and the first electrode portion and the second electrode portion are exposed through the second opening. The second conductive sheet has a second curved portion, and the two ends thereof extend to form a third electrode portion and a fourth electrode portion, respectively. The first electrode portion, the third electrode portion, and the fourth electrode portion have the same horizontal height. The third electrode portion and the fourth electrode portion are respectively provided with a third locking hole and a fourth locking hole. The second bent portion is provided on the first bent portion and is close to each other. The second bent portion is located in the second winding groove. The third electrode portion and the fourth electrode portion are respectively exposed from the second opening. The third electrode portion is provided. On the second electrode part and close to each other. The third conductive sheet has a third bent portion, and two ends thereof are extended to form a fifth electrode portion and a sixth electrode portion, respectively. The fifth electrode portion and the sixth electrode portion have the same horizontal height. The sixth electrode portion is respectively provided with a fifth lock hole and a sixth lock hole. The third bent portion is provided on the second bent portion and is in close contact with each other. The third bent portion is located in the second winding groove. The fifth electrode portion and the sixth electrode portion are exposed from the second opening. The six electrode portions are respectively disposed on the first electrode portion and the third electrode portion, and the fifth electrode portion and the sixth electrode portion are respectively adjacent to the first electrode portion and the third electrode portion. The fourth conductive sheet has a fourth bent portion, and two ends thereof are extended to form a seventh electrode portion and an eighth electrode portion, respectively. The seventh electrode portion is higher in level than the eighth electrode portion, and the seventh electrode portion and The eighth electrode portion is respectively provided with a seventh lock hole and an eighth lock hole. The fourth bent portion is disposed on the third bent portion and is in close contact with each other. The fourth bent portion is located in the second winding groove. The seventh electrode portion and the eighth electrode portion are exposed from the second opening. The eight electrode portions are respectively provided on the sixth electrode portion and the fourth electrode portion, and the seventh electrode portion and the eighth electrode portion are respectively adjacent to the sixth electrode portion and the fourth electrode portion.

In order to make the reviewers of the Guigui have a better understanding and understanding of the structural features of the present invention and the effects achieved, I would like to refer to the preferred embodiment diagram and the detailed description, as described below:

Embodiments of the present invention will be further explained by cooperating with related drawings below. Wherever possible, in the drawings and the description, the same reference numerals represent the same or similar components. In the drawings, shapes and thicknesses may be exaggerated based on simplification and convenient labeling. It can be understood that elements not specifically shown in the drawings or described in the description have the forms known to those skilled in the art in the art. Those skilled in the art can make various changes and modifications according to the content of the present invention.

Please refer to Fig. 1, Fig. 2 and Fig. 3 below. The first embodiment of the detachable transformer of the present invention is described below. This first embodiment is used to output a high voltage and a low current. For example, the low current is 5 to 30 amps. The first embodiment of the detachable transformer of the present invention includes a first winding frame 10, a primary winding 12, a second winding frame 14, a secondary winding 16 and a magnetic core group 18, among which The primary winding 12 is formed of a wire. The first winding frame 10 has a first through hole 20 passing through the center of the first winding frame 10. The top and bottom of the first winding frame 10 have a first winding groove 22 and a mounting groove 24 respectively. The first winding groove 22 surrounds the first through hole 20 and is provided with a primary winding 12. The wires of the primary winding 12 are wound around the first winding groove 22 according to a specific number of turns. The mounting groove 24 communicates with the first through hole 20, and one side of the mounting groove 24 has a first opening 26 communicating with an external space. A part of the edge of the bottom of the first bobbin 10 extends horizontally to form a first baffle portion 28, and the first baffle portion 28 abuts the bottom of the second bobbin 14. A center of the second winding frame 14 has a second through hole 30 penetrating through itself, a top of the second winding frame 14 has a second winding groove 32, and the second winding groove 32 surrounds the second through hole 30, and A secondary-side winding 16 is provided. The second winding frame 14 is provided in the mounting groove 24 through the first opening 26, and the first through hole 20 communicates with the second through hole 30, so that the second winding frame 14 and the first winding frame 10 form a detachable type. Combined. Part of the edge of the bottom of the second winding frame 14 extends vertically downward to form a second baffle portion 36, and the second baffle portion 36 abuts against the first baffle portion 28. As can be seen from the illustration, there is a protruding piece of material behind the second baffle portion 36, which can be accommodated in the space above the first baffle portion 28 to provide a preliminary positioning function. In addition, the second baffle portion 36 is close to The first baffle portion 28 is just so that the first through hole 20 corresponds to the second through hole 30. In this way, after the magnetic core group 18 is assembled, the second winding frame 14 and the first winding frame 10 are firmly combined. On the contrary, after the magnetic core group 18 is disassembled, the second winding frame 14 can be easily replaced to achieve rapid manufacturing, Effects such as labor saving and convenient assembly. A plurality of notches 38 and a plurality of pins 40 are provided on an edge of the second winding frame 14 corresponding to the first opening 26. In the first embodiment, the second winding groove 32 is an annular groove, and the secondary winding 16 is formed by a wire. The wire is wound on the pin 40 through the gap 38, and the pin 40 is inserted on the circuit board. , So that low current flows through the wires to the circuit board. The magnetic core group 18 surrounds the first winding frame 10 and the second winding frame 14, and extends into the first through hole 20 and the second through hole 30. The magnetic core group 18 further includes a first magnetic core 42 and a second magnetic core 44. The first magnetic core 42 abuts the first bobbin 10, and a central cylinder thereof extends into the first through hole 20, and both sides extend downward along the first bobbin 10, and the second magnetic core 44 abuts the second bobbin The wire frame 14 has a central cylinder extending into the second through hole 30, and both sides extend upward along the second wire frame 14 and are connected to the first magnetic core 42 to surround the first wire frame 10 and the second wire.线 架 14。 The wire frame 14. The first magnetic core 42 and the second magnetic core 44 both enter the center cylinder and the two sides after one cutting from the side, and the manufacturing is completed in one step, saving man-hours. In a power supply, the detachable transformer of the present invention is arranged on a circuit board, and then the power supply is covered with a power supply case, which is made of conductive material. Generally, in order to reduce the eddy current loss between the drift magnetic flux and the power supply case, a vertical transformer is used, but the height of the vertical transformer is relatively high, and it cannot be used in a low height power supply case. For example, the height is only 1 unit (U, unit), 1U is equal to 1.75 inches. The detachable transformer of the present invention is a vertical transformer, and its structural design is sufficiently flat, which can be applied in a low-height power supply case, and reduce the eddy current loss generated by the drift magnetic flux and the power supply case. .

Please refer to FIG. 3, FIG. 4, FIG. 5, FIG. 6, FIG. 7, FIG. 8, FIG. 9, and FIG. 10 below. The second embodiment of the detachable transformer of the present invention is described below. This second embodiment is used to output low voltage and high current. For example, the high current is greater than 40 amps. The second embodiment differs from the first embodiment in the secondary winding 16 and the second winding groove 32. In the second embodiment, one side of the second winding groove 32 further has a second opening 45 communicating with the external space, and the second opening 45 communicates with the first opening 26.

The secondary winding 16 further includes a first conductive sheet 46, a second conductive sheet 48, a third conductive sheet 50, and a fourth conductive sheet 52. For example, the first conductive sheet 46 and the second conductive sheet 48 The third conductive sheet 50 and the fourth conductive sheet 52 are copper sheets. The first conductive piece 46 has a first bent portion 54, and two ends thereof are extended to form a first electrode portion 56 and a second electrode portion 58, respectively. The level of the first electrode portion 56 is higher than that of the second electrode portion 58. The first electrode portion 56 and the second electrode portion 58 are respectively provided with a first locking hole 60 and a second locking hole 62. The first bent portion 54 is provided in the second winding groove 32, and the first electrode portion 56 and the second electrode portion 58 are exposed through the second opening 45. The second conductive sheet 48 has a second bent portion 64, and the two ends thereof are extended to form a third electrode portion 66 and a fourth electrode portion 68, and the first electrode portion 56, the third electrode portion 66, and the fourth electrode The horizontal height of the portion 68 is the same. The third electrode portion 66 and the fourth electrode portion 68 are respectively provided with a third locking hole 70 and a fourth locking hole 72. The second curved portion 64 is provided on the first curved portion 54 and is in close contact with each other. The second curved portion 64 is located in the second winding groove 32. The third electrode portion 66 and the fourth electrode portion 68 are respectively formed from the second opening 45. It is exposed that the third electrode portion 66 is provided on the second electrode portion 58 and is close to each other. The third conductive sheet 50 has a third bent portion 74, and two ends thereof are extended to form a fifth electrode portion 76 and a sixth electrode portion 78, respectively. The fifth electrode portion 76 and the sixth electrode portion 78 have the same horizontal height. The fifth electrode portion 76 and the sixth electrode portion 78 are respectively provided with a fifth locking hole 80 and a sixth locking hole 82. The third bent portion 74 is provided on the second bent portion 64 and is close to each other. The third bent portion 74 is located in the second winding groove 32, and the fifth electrode portion 76 and the sixth electrode portion 78 are exposed from the second opening 45. The fifth electrode portion 76 and the sixth electrode portion 78 are respectively disposed on the first electrode portion 56 and the third electrode portion 66, and the fifth electrode portion 76 and the sixth electrode portion 78 are respectively adjacent to the first electrode portion 56 and the first electrode portion 56 and Three electrode section 66. The fourth conductive sheet 52 has a fourth bent portion 84, and two ends thereof are extended to form a seventh electrode portion 86 and an eighth electrode portion 88, respectively. The height of the seventh electrode portion 86 is higher than that of the eighth electrode portion 88. The seventh electrode portion 86 and the eighth electrode portion 88 are respectively provided with a seventh lock hole 90 and an eighth lock hole 92. The fourth bent portion 84 is provided on the third bent portion 74 and is close to each other. The fourth bent portion 84 is located in the second winding groove 32, and the seventh electrode portion 86 and the eighth electrode portion 88 are exposed from the second opening 45. The seventh electrode portion 86 and the eighth electrode portion 88 are respectively provided on the sixth electrode portion 78 and the fourth electrode portion 68, and the seventh electrode portion 86 and the eighth electrode portion 88 are respectively adjacent to the sixth electrode portion 78 and the first electrode portion 78.四 electrode section 68. Since the shapes of the first conductive sheet 46, the second conductive sheet 48, the third conductive sheet 50, and the fourth conductive sheet 52 are similar, they can be manufactured with the same mold to reduce the manufacturing cost. In addition, the first curved portion 54, the second curved portion 64, the third curved portion 74, and the fourth curved portion 84 have a maximum heat dissipation area, which can be applied to high current output to avoid making large-volume output pins and thick coils. The winding is formed, and the time for the thick wire to wind the pin 40 is saved. Furthermore, in consideration of the large loss caused by the high-current circuit board, a conductive sheet can be directly connected to the output terminal on the circuit board. The secondary winding 16 of the transformer of the present invention is directly connected to the conductive sheet, and high current will not pass through. The circuit board outputs directly. Referring to the drawings, the first conductive sheet 46, the second conductive sheet 48, the third conductive sheet 50, and the fourth conductive sheet 52 pass through the first locking hole 60, the second locking hole 62, the third locking hole 70, and the fourth through a screw. The keyhole 72, the fifth keyhole 80, the sixth keyhole 82, the seventh keyhole 90, and the eighth keyhole 92 are directly locked to the secondary-side rectifier, so as to avoid loss caused by the high-current circuit board. The invention replaces the second bobbin 14 and the secondary winding 16 according to the output demand, so as to avoid the repeated manufacture of the first bobbin 10 and the primary winding 12, thereby achieving the objectives of rapid manufacturing, cost reduction and miniaturization and mass production .

To sum up, the second winding frame of the present invention forms a detachable vertical combination with the first winding frame, and the second winding frame is replaced according to output requirements, so as to achieve rapid manufacturing, reduce costs, and reduce the amount of miniaturization. The purpose of producing and reducing eddy current loss.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of implementation of the present invention. Therefore, all equivalent changes and modifications in accordance with the shape, structure, characteristics, and spirit described in the scope of the patent application for the present invention Shall be included in the scope of patent application of the present invention.

10‧‧‧ the first winding frame
12‧‧‧ primary winding
14‧‧‧Second Winding Frame
16‧‧‧Secondary winding
18‧‧‧ core set
20‧‧‧The first through hole
22‧‧‧First winding groove
24‧‧‧Mounting groove
26‧‧‧First opening
28‧‧‧The first baffle section
30‧‧‧Second through hole
32‧‧‧Second winding groove
36‧‧‧Second bezel
38‧‧‧ gap
40‧‧‧pin
42‧‧‧First magnetic core
44‧‧‧Second magnetic core
45‧‧‧ second opening
46‧‧‧The first conductive sheet
48‧‧‧Second conductive sheet
50‧‧‧ the third conductive sheet
52‧‧‧Fourth conductive sheet
54‧‧‧first bend
56‧‧‧First electrode section
58‧‧‧Second electrode section
60‧‧‧First keyhole
62‧‧‧Second keyhole
64‧‧‧ the second bend
66‧‧‧Third electrode section
68‧‧‧Fourth electrode section
70‧‧‧ Third keyhole
72‧‧‧ Fourth keyhole
74‧‧‧ Third bend
76‧‧‧ Fifth electrode section
78‧‧‧ sixth electrode section
80‧‧‧Fifth keyhole
82‧‧‧ Sixth keyhole
84‧‧‧Fourth bend
86‧‧‧Seventh electrode section
88‧‧‧Eighth electrode section
90‧‧‧ seventh keyhole
92‧‧‧ Eighth keyhole

FIG. 1 is a perspective view of a first embodiment of a detachable transformer of the present invention. FIG. 2 is an exploded view of the first embodiment of the detachable transformer of the present invention. Fig. 3 is a perspective view of a first bobbin of the present invention. FIG. 4 is a perspective view of a second embodiment of the detachable transformer of the present invention. FIG. 5 is an exploded view of the second embodiment of the detachable transformer of the present invention. FIG. 6 is a perspective view of a second bobbin according to a second embodiment of the present invention. FIG. 7 is a perspective view of a first conductive sheet of the present invention. FIG. 8 is a perspective view of a second conductive sheet of the present invention. FIG. 9 is a perspective view of a third conductive sheet of the present invention. FIG. 10 is a perspective view of a fourth conductive sheet of the present invention.

10‧‧‧ the first winding frame

12‧‧‧ primary winding

14‧‧‧Second Winding Frame

16‧‧‧Secondary winding

18‧‧‧ core set

22‧‧‧First winding groove

38‧‧‧ gap

40‧‧‧pin

42‧‧‧First magnetic core

44‧‧‧Second magnetic core

Claims (10)

A detachable transformer includes: a first winding frame having a first through hole penetrating through the center of the first winding frame, and the first winding frame has a first winding groove and a mounting groove at the top and the bottom, respectively. The first winding groove surrounds the first through hole, and one side of the mounting groove has a first opening communicating with the external space; a primary winding is provided in the first winding groove; A second winding frame has a second through hole penetrating through the center of the second winding frame, and a second winding groove is formed on the top of the second winding frame. The second winding groove surrounds the second through hole. Two winding frames are provided in the mounting groove through the first opening, and the first through hole communicates with the second through hole; a secondary side winding is provided in the second winding groove; and The magnetic core group is looped around the first winding frame and the second winding frame, and extends into the first through hole and the second through hole. The detachable transformer according to claim 1, wherein the primary winding is formed by a wire. The detachable transformer according to claim 1, wherein a part of the edge of the bottom of the first winding frame extends horizontally to form a first baffle portion, and the first baffle portion locates the second winding frame. The detachable transformer according to claim 3, wherein a part of the edge of the bottom of the second winding frame extends vertically downward to form a second baffle portion, and the second baffle portion abuts the first baffle portion. Bezel section. The detachable transformer according to claim 4, wherein one side of the second winding groove further has a second opening communicating with the external space, and the first opening communicates with the second opening. The detachable transformer according to claim 5, wherein the secondary winding further includes: a first conductive piece having a first bent portion, and two ends thereof are extended to form a first electrode portion and a first electrode portion, respectively; Two electrode portions, the height of the first electrode portion is higher than the second electrode portion, the first electrode portion and the second electrode portion are respectively provided with a first lock hole and a second lock hole, and the first bent portion is provided In the second winding groove, the first electrode portion and the second electrode portion are exposed from the second opening; a second conductive piece has a second curved portion, and two ends thereof extend to form a first The three electrode portions and a fourth electrode portion have the same height as the first electrode portion, the third electrode portion, and the fourth electrode portion, and the third electrode portion and the fourth electrode portion are respectively provided with a third lock hole and A fourth lock hole, the second bent portion is provided on the first bent portion and is close to each other, the second bent portion is located in the second winding groove, the third electrode portion and the fourth electrode portion Do not expose from the second opening, the third electrode portion is provided on the second electrode portion, and A third conductive sheet having a third curved portion, the two ends of which are extended to form a fifth electrode portion and a sixth electrode portion, respectively, the fifth electrode portion having the same height as the sixth electrode portion, The fifth electrode portion and the sixth electrode portion are provided with a fifth locking hole and a sixth locking hole, respectively. The third bending portion is provided on the second bending portion and is close to each other. The third bending portion is located at In the second winding groove, the fifth electrode portion and the sixth electrode portion are exposed from the second opening, and the fifth electrode portion and the sixth electrode portion are disposed on the first electrode portion and the third electrode, respectively. On the other hand, the fifth electrode portion and the sixth electrode portion abut the first electrode portion and the third electrode portion, respectively; and a fourth conductive sheet having a fourth bent portion, the two ends of which extend to A seventh electrode portion and an eighth electrode portion are respectively formed, and the height of the seventh electrode portion is higher than the eighth electrode portion, and the seventh electrode portion and the eighth electrode portion are respectively provided with a seventh lock hole and a first Eight lock holes, the fourth curved portion is provided on the third curved portion, and is close to each other, the fourth curved portion The curved portion is located in the second winding groove, the seventh electrode portion and the eighth electrode portion are exposed from the second opening, and the seventh electrode portion and the eighth electrode portion are respectively provided on the sixth electrode portion and the On the fourth electrode portion, the seventh electrode portion and the eighth electrode portion abut the sixth electrode portion and the fourth electrode portion, respectively. The detachable transformer according to claim 6, wherein the first conductive sheet, the second conductive sheet, the third conductive sheet, and the fourth conductive sheet are all copper sheets. The detachable transformer according to claim 4, wherein the edge of the second winding frame corresponding to the first opening is provided with a plurality of notches and a plurality of pins. The detachable transformer according to claim 4, wherein the second winding groove is an annular groove, and the secondary winding is formed by a wire. The detachable transformer according to claim 1, wherein the magnetic core group further comprises: a first magnetic core, a central cylinder of which extends into the first through hole, and both sides of the magnetic core group are downward along the first winding frame; Extending; and a second magnetic core, the central cylinder of which extends into the second through hole, both sides extend upward along the second winding frame, and are connected to the first magnetic core to surround the first winding Frame and the second winding frame.