CN205142021U - Transformer combined structure and power supply device - Google Patents

Abstract

The utility model discloses a transformer integrated configuration, including transformer, inductance element, first circuit board and conducting strip, the conducting strip install in between transformer and the first circuit board and including first conducting strip, the one end and the transformer electricity of first conducting strip are connected, and the other end is protruding to be equipped with first lug, first through-hole and second through-hole have been seted up on the first circuit board, the electrically conductive pin of first lug and inductance element passes respectively on first circuit board is located with the arch to first through-hole and second through-hole, be equipped with the solder conducting object on the first circuit board with electric connection first lug and inductance element. The utility model discloses a conducting strip and solder conducting object are connected transformer and inductance element electricity, need not to connect through copper foil printed circuit electricity, and the effective power loss is low, and transformer and inductance element electricity are connected on first circuit board, and space utilization is high. The utility model also discloses a power supply device with transformer integrated configuration.

Description

Transformer combined structure and power supply device

technical field

The utility model relates to a power supply device, in particular to a transformer combination structure and a power supply device which can effectively save circuit board space and have low power consumption.

Background technique

The main purpose of the power supply device is to convert the high-voltage and low-stability AC input power provided by the power company into a low-voltage and stable DC output power suitable for various electronic devices. Therefore, the power supply is widely used in electronic devices such as computers, office automation equipment, industrial control equipment, and communication equipment.

Referring to Fig. 1, the power supply device generally includes a transformer 12, a primary side circuit 11 and a secondary side circuit 13. During assembly, the primary side circuit 11, the secondary side circuit (including a rectifier circuit 131, a filter circuit 132 and other circuits) and the transformer 12 The components are arranged on the main circuit board, and the electrical connection of each component is carried out through the copper foil printed circuit on the main circuit board. Especially when the transformer 12 is electrically connected with the inductance element, it must be connected through the copper foil printed circuit. The thickness of the copper foil on the board is low and the impedance is high, so that the power loss of the power supply is high. Moreover, the current electronic equipment is gradually developing towards high efficiency and small size. The above-mentioned installation method also occupies a large amount of space on the main circuit board and cannot effectively improve Space utilization of the main circuit board. Therefore, there is a need for a circuit assembly method of a power supply device with high efficiency and high space utilization.

Utility model content

The purpose of this utility model is to provide a transformer combination structure and a power supply device with the transformer combination structure, the transformer combination structure can electrically connect the transformer and the inductance element through the conductive sheet outside the main circuit board , no need to connect through copper foil printed circuit, low effective power loss and high space utilization.

In order to realize the purpose, the utility model discloses a transformer combined structure, including a transformer, an inductance element, a first circuit board and at least one conductive sheet, the conductive sheet is installed between the transformer and the first circuit board and It includes a first conductive sheet, one end of the first conductive sheet is electrically connected to the transformer, and the other end is protruded with a first bump, and a hole for the first bump to pass through is opened on the first circuit board. The first through hole and the second through hole for the conductive pin of the inductance element to pass through, and the first bump and the conductive pin of the inductance element pass through the first through hole and the second through hole respectively. The through hole is protruded on the first circuit board, and the first circuit board between the first bump and the conductive pin of the inductance element is provided with a Solder conductors for conductive pins of inductor components.

Compared with the prior art, in the utility model, the inductance element extends the conductive pin on the first circuit board, and the transformer extends the first conductive pin on the first circuit board close to the conductive pin of the inductance element through the conductive sheet. Bump, and then electrically connect the first bump and the conductive pin of the inductance element through solder to form a solder conductor, so that the transformer and the inductance element are electrically connected, without the need for electrical connection through a copper foil printed circuit, and the effective power loss is low. Moreover, the transformer and the inductance element are electrically connected on the first circuit board, which effectively saves the utilization space of the main circuit board and makes the utilization rate of the space of the main circuit board high.

Preferably, the conductive sheet further includes at least one second conductive sheet, one end of the second conductive sheet is electrically connected to the transformer, and the other end extends out from the edge of the first circuit board along the first circuit board In order to form external conductive terminals, the external conductive terminals are used for connecting a second circuit board. This solution enables the transformer to be electrically connected to another circuit board different from the first circuit board through the conductive sheet.

Preferably, at least one conductive hole is opened on the conductive sheet, and a conductive pin of the transformer passes through a corresponding conductive hole and electrically connects the conductive sheet to the corresponding conductive pin, so that The conductive sheet is electrically connected to the transformer, and this solution makes the assembly method of the utility model simple, and the connection between the conductive sheet and the transformer is stable.

Specifically, the first conductive sheet includes a first conductive portion provided with the conductive hole, a second conductive portion formed longitudinally extending along the first conductive portion toward the inductance element, and a second conductive portion formed from the second conductive portion. The part adjacent to the inductance element extends to the third conductive part perpendicular to the direction of the inductance element, the first bump is a horizontal strip protruding on the third conductive part, the first The through hole is a long hole matched with the transverse strip. This solution not only facilitates the solder conductive material to electrically connect the first bump and the conductive pin of the inductance element, but also further reduces the impedance between the transformer and the inductance element, and the power loss is low.

Specifically, the conductive sheet also includes at least one third conductive sheet, and several conductive holes are opened on the third conductive sheet, and the several conductive holes of the third conductive sheet are respectively used for several conductive holes in the transformer. The pins pass through correspondingly, so as to electrically connect several corresponding conductive pins of the transformer.

Specifically, pin sockets corresponding to the conductive holes are opened on the first circuit board, and the corresponding conductive pins in the transformer pass through the conductive holes and are plugged into the pin sockets. . This solution further increases the stability and external force resistance performance of the combined structure of the transformer.

Preferably, a positioning bump is protruded from the conductive sheet, and a positioning hole for installing the positioning bump is opened on the first circuit board, and the positioning bump is inserted into the positioning hole to place the positioning bump The conductive sheet is fixed on the first circuit board, the first bump is a positioning bump of the first conductive sheet, and the first through hole is a corresponding positioning hole. This solution enables the conductive sheet to be effectively fixed on the first circuit board, and avoids affecting the conductivity of the transformer and other components under the action of external force. Of course, a positioning bump different from the first bump may also be provided in the first conductive sheet, and a corresponding positioning hole may be provided on the first circuit board.

Specifically, the positioning protrusion is formed by bending and extending upward from one side edge of the conductive sheet. This solution makes the structure of the conductive sheet simple and easy to manufacture. Of course, the positioning bump can also be protrudingly arranged in the middle of the conductive sheet.

Preferably, the first through hole is adjacent to the second through hole, so that the first bump is adjacent to the conductive pin of the inductance element. It is convenient for the solder conductor to electrically connect the transformer and the inductance element.

The present invention also provides a power supply device, comprising a primary side circuit, a secondary side circuit and a transformer combination structure, the transformer combination structure being as above. Compared with the prior art, in the utility model, the inductance element extends the conductive pin on the first circuit board, and the transformer extends the first conductive pin on the first circuit board close to the conductive pin of the inductance element through the conductive sheet. Bump, and then electrically connect the first bump and the conductive pin of the inductance element through solder to form a solder conductor, so that the transformer and the inductance element are electrically connected, without the need for electrical connection through a copper foil printed circuit, and the effective power loss is low. Moreover, the transformer and the inductance element are electrically connected on the first circuit board, which effectively saves the utilization space of the main circuit board and makes the utilization rate of the space of the main circuit board high.

Specifically, the power supply device further includes a main circuit board, the primary side circuit, the secondary side circuit and the transformer are mounted on the main circuit board, and the first circuit board is an auxiliary circuit board and is located on the main circuit board. The side of the transformer away from the main circuit board. The first circuit board and the main circuit board are respectively located on opposite sides of the transformer, which effectively saves space in the power supply device and improves the space utilization rate of the entire power supply device.

More specifically, the secondary side circuit includes a rectifier circuit board, and the conductive sheet further includes a second conductive sheet, one end of the second conductive sheet is electrically connected to the auxiliary circuit board, and the second conductive sheet The other end protrudes from the edge of the first circuit board along the first circuit board to form an external conductive terminal, and the rectifier circuit board is provided with a pin slot for installing the external conductive terminal, and the external conductive terminal The conductive pin installed in the pin slot to enable the transformer to output the induced voltage signal is electrically connected to the rectifier circuit board through the second conductive sheet, so as to transmit the induced voltage of the transformer to the rectification in the rectification circuit board. This solution separates the rectifier circuit from the main circuit board, further improving the space utilization of the main circuit board, and because the rectifier circuit board is electrically connected to the transformer through the pin slots on it, the rectifier circuit board is relatively The board and the auxiliary circuit board are arranged vertically, which further saves the space in the power supply device and improves the space utilization rate of the whole power supply device.

More specifically, conductive pins are provided on the rectifier circuit board, and the main circuit board is electrically connected to the rectifier circuit board through the conductive pins to obtain an induced voltage signal rectified by the rectifier circuit board, which is convenient for assembly.

Description of drawings

FIG. 1 is a circuit diagram of a power supply device in the prior art.

Fig. 2 is a partial structural diagram of the power supply device of the present invention.

FIG. 3 is a structural diagram of another angle of the power supply device in FIG. 2 .

Fig. 4 is a structural schematic diagram of the combined structure of the transformer described in the present invention.

FIG. 5 is a structural schematic view of another angle of the combined structure of the transformer in FIG. 4 .

FIG. 6 is an exploded schematic diagram of the combined structure of the transformer in FIG. 4 .

Fig. 7 is a schematic structural diagram of the first conductive sheet of the present invention.

Fig. 8 is a schematic structural diagram of the second conductive sheet of the present invention.

Fig. 9 is a schematic structural view of the third conductive sheet of the present invention.

detailed description

In order to describe the technical content, structural features, achieved goals and effects of the present utility model in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

Referring to Fig. 2 and Fig. 3, the present invention discloses a power supply device 20, including a primary side circuit (not shown in the figure), a secondary side circuit (rectifier circuit board 22) and a transformer combination structure 21, referring to Fig. 4 to Fig. 6. The combined transformer structure 21 includes a transformer 31, an inductance element 32, a first circuit board 33 and at least one conductive sheet 34, the transformer 31 and the inductance element 32 are installed on the first circuit board 33, and the conductive The sheet 34 is installed between the transformer and the first circuit board 33 and includes a first conductive sheet 41, one end of the first conductive sheet 41 is electrically connected to the transformer 31, and the other end is provided with a first bump 411 , the first circuit board 33 is provided with a first through hole 331 for the first bump 411 to pass through and a second through hole 332 for the conductive pin 321 of the inductance element 32 to pass through, and the The first bump 411 and the conductive pin 321 of the inductance element 32 respectively pass through the first through hole 331 and the second through hole 332 to protrude on the first circuit board 33, the first The solder conductive material ( not shown in the figure).

Wherein, when assembling the transformer combination structure 21, one end of the first conductive sheet 41 is electrically connected to the corresponding conductive pin 313 of the transformer 31, and the first bump 411 at the other end is installed on the first circuit board 33 through the first through hole 331. On the above, the conductive pin 321 of the inductance element 32 is installed on the first circuit board 33 through the second through hole 332, and the first bump 411 and the conductive pin 321 are welded with solder to connect the first bump 411 to the first bump 332. A solder conductor is formed between the block 411 and the conductive pin 321 of the inductance element 32, so that the first bump 411 and the conductive pin 321 are electrically connected together through the solder conductor, without the need for a copper foil printed circuit Electrically connected, the effective power loss is low, and the conductive pin 313 of the transformer 31 and the conductive pin 321 of the inductance element 32 are electrically connected on the first circuit board 33 through the first conductive sheet 41, effectively saving the utilization of the main circuit board space, making the space utilization of the main circuit board high.

Preferably, the first through hole 331 is adjacent to the second through hole 332, and at this time, the first bump 411 and the conductive pin 321 are protruded adjacently on the first circuit board 33, so that solder conductive material The first bump 411 is electrically connected to the conductive pin 321 .

Preferably, referring to FIG. 7 , the first bump 411 of the first conductive sheet 41 cooperates with the first through hole 331 on the first circuit board 33 so that the first bump 411 of the first conductive sheet 41 A protrusion 411 is plugged into the first through hole 331 , so as to effectively fix the first conductive sheet 41 on the first circuit board 33 . Certainly, it is also possible to additionally set a positioning bump directly on the first conductive sheet 41, and set a positioning hole corresponding to the positioning bump on the first circuit board 33, through the positioning cooperation between the positioning bump and the positioning hole The first conductive sheet 411 is fixed on the first circuit board 33 .

Preferably, at least one conductive hole 412 is opened on the first conductive sheet 41, and a conductive pin 313 of the transformer 31 passes through one of the conductive holes 412 correspondingly, and the conductive pin 313 and the conductive pin 313 are welded with solder. The hole 412 is used to electrically connect the first conductive sheet 41 to the corresponding conductive pin 313 in the transformer 31 . Certainly, the conductive pin 313 may also be in contact with the hole wall of the conductive hole 412 or the first conductive sheet 41 so that the first conductive sheet 41 is electrically connected to the conductive pin 313 in the transformer 31 .

Specifically, the first conductive sheet 41 includes a first conductive portion 61 provided with the conductive hole 412, a second conductive portion 62 formed longitudinally extending along the first conductive portion 61 toward the inductive element 32, and The third conductive portion 63 is formed extending from a portion of the second conductive portion 62 adjacent to the inductive element 32 to a direction perpendicular to the inductive element 32 . This solution further reduces the impedance between the transformer and the inductance element 32, and the power loss is low. Wherein, the first bump 411 is a horizontal strip protruding from the third conductive portion 63 , and the first through hole 331 is a long hole matched with the horizontal strip.

More specifically, the first bump 411 is formed by bending and extending an edge of the third conductive portion 63 that is adjacent to the inductance element 32 upward.

Specifically, the first circuit board 33 is provided with a pin insertion hole 51 corresponding to the conductive hole 412, and the corresponding conductive pin 313 in the transformer 31 passes through the conductive hole 412 and is plugged into the conductive hole 412. Inside the pin socket 51. This solution further increases the stability and external force resistance of the combined transformer structure 21 .

Wherein, in this embodiment, the number of the conductive holes 412 is two, of course, the number of the conductive holes 412 can be determined by the technician according to the number of conductive pins 313 of the transformer 31 that the first conductive holes 41 need to be connected to. The number is determined, and it can also be 1, 3 and other numbers.

6 and 8, the conductive sheet 34 also includes a second conductive sheet 42, one end of the second conductive sheet 42 is electrically connected to the transformer 31, and the other end extends along the surface of the first circuit board 33. The edge of the first circuit board 33 is extended to form an external conductive terminal 422, and the external conductive terminal 422 is used for connecting a second circuit board. The second conductive sheet 42 is used to electrically connect the transformer combination structure 21 and the second circuit board. In this embodiment, the second circuit board is a rectifying circuit board 22 .

Preferably, the second conductive sheet 42 is protruded with a positioning bump 421, and the first circuit board 33 is provided with a positioning hole 333 for installing the positioning bump 421, and the positioning bump 421 is inserted into The second conductive sheet 42 is fixed on the first circuit board 33 in the positioning hole 333 . Specifically, the positioning protrusion 421 is formed by bending and extending one side edge of the conductive sheet 42 upward.

Specifically, at least one conductive hole 423 is opened on the second conductive sheet 42, and a conductive pin 311 of the transformer 31 passes through one of the conductive holes 423 so that the second conductive sheet 42 and the The transformer 31 is electrically connected. More specifically, the first circuit board 33 is provided with a pin insertion hole 52 corresponding to the conductive hole 423, and the corresponding conductive pin 313 in the transformer 31 passes through the conductive hole 423 and is plugged into the Inside the pin socket 52 . This solution further increases the stability and external force resistance of the combined transformer structure 21 . In this solution, a second conductive sheet 42 has one conductive hole 423 , of course, the number of the conductive holes 412 can be set by technicians according to needs, or can be multiple. The number of the second conductive sheets 42 is two, of course, the number of the second conductive sheets 42 can be set by technicians according to needs, and can also be 1, 3, 4 and so on.

6 and 9, the conductive sheet 34 also includes a third conductive sheet 43, the third conductive sheet 43 is electrically connected to the transformer 31, and several conductive holes 432 are provided on it, and several conductive holes 432 Several conductive pins 312 in the transformer 31 are passed through correspondingly, and the conductive pins 312 and the conductive holes 432 are welded with solder so that the conductive pins 312 are electrically connected with the conductive holes 432, so that the transformer 31 Several corresponding conductive pins 312 (several conductive pins corresponding to the same third conductive sheet 43 ) are electrically connected. The third conductive sheet 43 is used to connect the conductive pins on the transformer 31 . In this embodiment, a third conductive sheet 43 is provided with two conductive holes 432 , of course, the number of the conductive holes 432 can be set by technicians according to needs, and can also be 3, 4, etc. number. The number of the third conductive sheets 43 is two, of course, the number of the third conductive sheets 43 can be set by technicians according to needs, and can also be 1, 3, 4 and so on. Of course, in the present invention, the conductive pin 312 can also be in contact with the hole wall of the conductive hole 432 or the third conductive sheet 43 so that the third conductive sheet 43 is electrically connected to the conductive pin 312 in the transformer 31 .

Specifically, a positioning bump 431 protrudes from the third conductive sheet 43, and a positioning hole 334 for installing the positioning bump 431 is opened on the first circuit board 33, and the positioning bump 431 is inserted into the The positioning hole 333 is used to fix the third conductive sheet 43 on the first circuit board 33 . Specifically, the positioning protrusion 431 is formed by bending and extending one side edge of the conductive sheet 43 upward.

Specifically, the first circuit board 33 is provided with a pin insertion hole 53 corresponding to the conductive hole 432, and the corresponding conductive pin 312 in the transformer 31 passes through the conductive hole 432 and is plugged into the conductive hole 432. Inside the pin socket 53.

2 and 3, the power supply device, 2 also includes a main circuit board 23, the primary side circuit, secondary side circuit and the transformer 31 are mounted on the main circuit board 23, the first The circuit board 33 is an auxiliary circuit board located on a side of the transformer 31 away from the main circuit board 23 . The first circuit board 33 and the main circuit board 23 are respectively located on opposite sides of the transformer 31 , which effectively saves space in the power supply device 20 and improves the space utilization rate of the entire power supply device 20 .

Referring to FIG. 6 , the secondary side circuit includes a rectifier circuit board 22, and the rectifier circuit board 22 is provided with a pin slot 221 for inserting the outer conductive terminal 422 of the second conductive sheet 42. The conductive terminal 422 is installed in the pin slot 221 so that the conductive pin 311 of the transformer 31 outputting the induced voltage signal is electrically connected with the rectifier circuit board 22 through the second conductive sheet 42, so that the The induced voltage of the transformer 31 is sent to the rectification circuit board 22 for rectification.

More specifically, the rectifier circuit board 22 is provided with conductive pins 222, and the main circuit board 21 is provided with jacks for the conductive pins 222 to be plugged in, so that through the cooperation of the conductive pins 222 and the jacks, , electrically connecting the rectifying circuit board 22 to the main circuit board 23 , so that the main circuit board 23 obtains the induced voltage signal rectified by the rectifying circuit board 22 . Referring to FIG. 2 and FIG. 3 , the rectifier circuit board 22 is arranged vertically relative to the main circuit board 23 and the auxiliary circuit board 33 , which further saves space in the power supply device 20 and improves the space utilization rate of the entire power supply device 20 .

What is disclosed above is only the preferred embodiment of the present utility model, and of course the scope of rights of the present utility model cannot be limited with this. Therefore, the equivalent changes made according to the patent scope of the utility model still belong to the scope covered by the utility model .

Claims (13)

1. A transformer combination structure, characterized in that: comprising a transformer, an inductance element, a first circuit board and at least one conductive sheet, the conductive sheet is installed between the transformer and the first circuit board and includes the first conductive sheet One end of the first conductive sheet is electrically connected to the transformer, and the other end is protruded with a first bump, and the first circuit board is provided with a first through hole for the first bump to pass through and A second through hole for the conductive pin of the inductance element to pass through, and the first bump and the conductive pin of the inductance element pass through the first through hole and the second through hole respectively to protrude On the first circuit board, a conductive lead electrically connecting the first bump and the inductive element is arranged on the first circuit board between the first bump and the conductive pin of the inductive element. pin solder conductors. 2. The combined transformer structure according to claim 1, characterized in that: said conductive sheet further comprises at least one second conductive sheet, one end of said second conductive sheet is electrically connected to said transformer, and the other end is along said first conductive sheet. A circuit board protrudes from the edge of the first circuit board to form external conductive terminals, and the external conductive terminals are used to connect to a second circuit board. 3. The combined transformer structure according to claim 1, wherein at least one conductive hole is provided on the conductive sheet, and a conductive pin of the transformer passes through a corresponding conductive hole and connects the conductive sheet. It is electrically connected with the corresponding conductive pin, so that the conductive sheet is electrically connected with the transformer. 4. The combined transformer structure according to claim 3, wherein the first conductive sheet includes a first conductive portion provided with the conductive hole, along the longitudinal direction of the first conductive portion toward the inductive element. The extended second conductive portion and the third conductive portion extending from the second conductive portion adjacent to the inductance element to the direction perpendicular to the inductance element, the first bump is protruded on the The horizontal strip on the third conductive part, the first through hole is a long hole matched with the horizontal strip. 5. The combined transformer structure according to claim 3, characterized in that: said conductive sheet further comprises at least one third conductive sheet, said third conductive sheet is provided with several conductive holes, and said third conductive sheet The several conductive holes respectively pass through correspondingly the several conductive pins in the transformer, so as to electrically connect the corresponding several conductive pins of the transformer. 6. The combined transformer structure according to claim 1, wherein a positioning bump is protruded from the conductive sheet, a positioning hole for installing the positioning bump is opened on the first circuit board, and the positioning The bump is inserted into the positioning hole to fix the conductive sheet on the first circuit board, the first bump is a positioning bump of the first conductive sheet, and the first through hole for the corresponding positioning holes. 7. The combined transformer structure according to claim 6, wherein the positioning protrusion is formed by bending and extending upward from one edge of the conductive sheet. 8. The combined transformer structure according to claim 1, wherein the first through hole is adjacent to the second through hole so that the first bump is adjacent to the conductive pin of the inductor element. 9. The combined transformer structure according to claim 3, characterized in that: pin sockets corresponding to the conductive holes are opened on the first circuit board, and the corresponding conductive pins in the transformer pass through the conductive holes. The conductive hole is inserted into the pin socket. 10. A power supply device, characterized in that it comprises a primary side circuit, a secondary side circuit and a transformer combination structure, and the transformer combination structure is as shown in any one of claims 1-9. 11. The power supply device according to claim 10, further comprising a main circuit board, the primary side circuit, the secondary side circuit and the transformer are installed on the main circuit board, the first The circuit board is an auxiliary circuit board and is located on a side of the transformer away from the main circuit board. 12. The power supply device according to claim 11, wherein the secondary side circuit includes a rectifier circuit board, and the conductive sheet further includes a second conductive sheet, one end of the second conductive sheet is connected to the The auxiliary circuit board is electrically connected, and the other end of the second conductive sheet protrudes from the edge of the first circuit board along the first circuit board to form an external conductive terminal. The pin slot of the conductive terminal, the external conductive terminal is installed in the pin slot so that the conductive pin of the transformer outputting the induced voltage signal is electrically connected to the rectifier circuit board through the second conductive sheet , so as to transmit the induced voltage of the transformer to the rectification circuit board for rectification. 13. The power supply device according to claim 12, wherein conductive pins are provided on the rectifier circuit board, and the main circuit board is electrically connected to the rectifier circuit board through the conductive pins to obtain the The induced voltage signal rectified by the rectification circuit board.