CN106683853B

CN106683853B - Transformer framework, transformer connecting circuit and switching power supply

Info

Publication number: CN106683853B
Application number: CN201710159283.8A
Authority: CN
Inventors: 马海波; 其他发明人请求不公开姓名
Original assignee: Adex Electronics Nanjing Co ltd
Current assignee: Adex Electronics Nanjing Co ltd
Priority date: 2017-03-17
Filing date: 2017-03-17
Publication date: 2020-10-02
Anticipated expiration: 2037-03-17
Also published as: CN106683853A

Abstract

The invention discloses a transformer framework, a transformer connecting circuit and a switching power supply, wherein the transformer framework comprises a framework body, and the transformer framework is characterized in that: the transformer coil winding lead-out wire electric connection structure is characterized in that at least one pair of electrode plates used for being electrically connected with a transformer coil winding lead-out wire are arranged at the bottom of the framework body, and when the transformer is installed on a PCB, the electrode plates are detachably electrically connected with the PCB. Compared with the prior art, the invention has the advantages that the paired electrode plates are arranged on the framework to replace a plurality of rows of pins in the prior art, the structure is simplified from the perspective of the product structure, the forming is convenient, the cost is reduced, and the production effect is improved. Compared with the pins, the electrode plate has the advantages that the pins cannot be used or cannot be connected with the PCB due to deformation of the pins caused by misoperation, so that the improvement generates numerous advantages on the transformer framework per se, and meanwhile, the framework is connected with the PCB more simply but more reliably.

Description

Transformer framework, transformer connecting circuit and switching power supply

Technical Field

The invention relates to a high-power transformer of a switching power supply.

Background

The existing high-power transformer of the switching power supply mainly adopts a framework form, pins 15 are arranged on the framework, and as shown in figure 1, the pins and a PCB are welded to be fixed and electrically connected. The existing defects are that: 1. after the transformer is welded with the PCB, if the transformer needs to be maintained, the transformer is troublesome to disassemble, and the PCB is easy to damage, so that the maintenance cost is increased; 2. the framework pins are more and need to be distributed on the PCB to play an electrical connection role, and the PCB circuit needs to be connected to each pin, so that the PCB wiring is increased, other devices can not be distributed in the PCB space at the bottom of the product, and the space utilization rate of the PCB is reduced.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a transformer framework for a high-power transformer of a switching power supply, which reduces the difficulty of a molding process, is convenient to be connected with a PCB (printed circuit board), is beneficial to the circuit layout of the PCB and improves the space utilization rate of the PCB.

In order to solve the technical problems, the invention adopts the technical scheme that:

the utility model provides a transformer skeleton, includes the skeleton body, its characterized in that: the transformer coil winding lead-out wire electric connection structure is characterized in that at least one pair of electrode plates used for being electrically connected with a transformer coil winding lead-out wire are arranged at the bottom of the framework body, and when the transformer is installed on a PCB, the electrode plates are detachably electrically connected with the PCB.

And the framework body is also provided with an electrode plate mounting structure which is detachably connected with the PCB.

The electrode plate mounting structure is a mounting hole.

One or more lead mounting structures are disposed on the electrode plate.

The lead mounting structure is a mounting groove or a mounting hole.

The framework body comprises a bottom plate and a mounting frame, the electrode plate is located at the lower end of the bottom plate, and the mounting structure is located on the bottom plate.

The invention also provides a transformer, which comprises a transformer coil and any one of the transformer frameworks, wherein the transformer coil is wound on the transformer framework, and the leading-out wire of the transformer coil is connected to the electrode plate.

According to the transformer, the lead-out wire is welded on the electrode plate.

The invention also provides a transformer connecting circuit, which comprises a PCB and a transformer connected on the PCB, wherein the transformer comprises a transformer coil and any one of the transformer frameworks, the transformer coil is wound on the transformer framework, and a leading-out wire of the transformer coil is connected on the electrode plate; the PCB is provided with a connecting terminal matched with the electrode plate, and the electrode plate is detachably electrically connected with the connecting terminal on the PCB.

According to the transformer connecting circuit, the electrode plate is detachably connected with the connecting terminal on the PCB through a fastener.

The invention also provides a switch power supply, which comprises a PCB (printed circuit board) and a transformer connected to the PCB, wherein the transformer comprises a transformer coil and any one of the transformer frameworks, the transformer coil is wound on the transformer framework, and a leading-out wire of the transformer coil is connected to the electrode plate; the PCB is provided with a connecting terminal matched with the electrode plate, and the electrode plate is detachably electrically connected with the connecting terminal on the PCB.

According to the switching power supply, the electrode plate is detachably connected with the connecting terminal on the PCB through a fastener.

Compared with the prior art, the invention has the beneficial effects that:

1. the paired electrode plates are arranged on the framework to replace a plurality of rows of pins in the prior art, so that the structure is simplified from the perspective of the product structure, the forming is convenient, the cost is reduced, and the production effect is improved. Compared with the pins, the electrode plate has the advantages that the pins cannot be used or cannot be connected with the PCB due to deformation of the pins caused by misoperation, so that the improvement generates numerous advantages on the transformer framework per se, and meanwhile, the framework is connected with the PCB more simply but more reliably.

2. The transformer framework can be rapidly detachably connected through the electrode plate mounting structure arranged on the framework body, namely the mounting hole, and meanwhile, the mounting hole also limits the mounting position, so that the reliability of connection between the transformer framework and a PCB is improved.

3. Be provided with lead wire mounting structure on the plate electrode, through lead wire mounting structure, can be quick with orderly and the plate electrode electricity of transformer coil's lead-out wire be connected.

4. According to the transformer, the coil lead-out wires are electrically connected to the electrode plate, and compared with the existing method that different lead-out wires are connected to different pins, the transformer is simple in connection mode and more reliable in connection, and the quality of the transformer is guaranteed.

5. According to the transformer connecting circuit, the outgoing line of the transformer coil is electrically connected to the electrode plate, the transformer and the PCB are connected through the electrode plate positioned at the bottom of the transformer framework and the connecting terminal positioned on the PCB, the electrode plate is connected with the PCB in a fastening contact mode, and the contact position is positioned on the surface of the PCB or above the surface of the PCB, so that the situation that the existing pin needs to be inserted into the PCB and the position of the PCB connected with the transformer cannot be used for wiring is changed, and therefore, a cut-off closed space cannot be formed on the surface of the PCB in the connection mode of the electrode plate and the PCB, but the position of the PCB connected with the transformer can also be used for wiring, and the space utilization rate of the PCB is improved.

6. According to the switching power supply, the lead-out wire of the transformer coil is electrically connected to the electrode plate, the transformer and the PCB are connected through the electrode plate positioned at the bottom of the transformer framework and the connecting terminal positioned on the PCB, the electrode plate is connected with the PCB in a fastening contact mode, the contact position is positioned on the surface of the PCB or above the surface of the PCB, the situation that the existing pin needs to be inserted into the PCB and the position of the PCB connected with the transformer cannot be used for wiring is changed, so that a cut-off closed space cannot be formed on the surface of the PCB in the connection mode of the electrode plate and the PCB, the position of the PCB connected with the transformer can also be used for wiring, and the space utilization rate of the PCB is improved.

Drawings

FIG. 1 is a schematic diagram of a conventional transformer bobbin;

FIG. 2 is a schematic diagram of the construction of the inventive transformer bobbin;

FIG. 3 is a front view (planar) of FIG. 2;

fig. 4 is a bottom view (perspective) of fig. 2;

FIG. 5 is a schematic diagram of the transformer of the present invention;

fig. 6 is a schematic diagram of the transformer connection circuit according to the present invention.

Fig. 7 is a front view (plan) of fig. 6.

Wherein: 1. a skeleton body; 2. an electrode plate; 3. a side edge; 4. an electrode plate mounting hole; 5. a lead mounting hole; 6. a base plate; 7. a transformer coil; 8. a transformer; 9. a connection terminal; 10. a fastener 11, a PCB 12 and a wiring space; 13. A bottom plate mounting hole; 14. a lead slot; 15 stitches.

Detailed Description

The invention is described in detail below with reference to the accompanying drawings:

example one

A transformer bobbin, as shown in fig. 2, 3 and 4, comprises a bobbin body 1 and a pair of electrode plates 2, wherein the bobbin body comprises a bottom plate 6, side edges 3 and a coil mounting frame. Wherein the number of pairs of electrode plates 2 is determined according to the number of transformer coils. The electrode plate 2 is fixed at the lower end of the bottom plate 6 in an insert manner or other manners. The electrode plate 2 is used for fixing a lead-out wire of the transformer coil.

In order to facilitate the leading-out and fixing of the outgoing line of the transformer coil, a bottom plate mounting hole 13 and a lead slot 14 are processed on the bottom plate 6, and the lead slot 14 is used for leading out the outgoing line of the transformer coil winding. The bottom plate mounting hole 13 is used for connecting the transformer framework and the PCB. An electrode plate mounting hole 4 corresponding to the position of a bottom plate mounting hole 13 on the bottom plate 6 and a lead mounting hole 5 corresponding to the position of a lead groove 14 on the bottom plate 6 are also processed on the electrode plate 2, and a transformer coil lead wire is welded in the mounting hole 5.

Example two

A transformer, as shown in fig. 5, comprising the transformer bobbin of the above embodiment 1, wherein a transformer coil is wound on the transformer bobbin, and the lead wire of the transformer coil 7 is connected to the electrode plate 2 of the transformer bobbin. The connection mode of the outgoing line of the transformer coil and the electrode plate 2 can adopt welding or other modes.

EXAMPLE III

A transformer connecting circuit is shown in fig. 6, and comprises a PCB 11 and a transformer 8 connected to the PCB, wherein the transformer 8 adopts the structure of the second embodiment. A connecting terminal 9 is arranged on a PCB 11, a transformer 8 is connected on the connecting terminal 9 of the PCB, and a wiring space 12 which can be completely used for wiring is formed by the communication between two adjacent connecting terminals 9 along the x-axis direction and between two adjacent connecting terminals 9 along the y-axis direction on the plane of the PCB.

The fastener 10 is optimized in the connection of transformer and PCB, and the fastener can select for use the metal screw, and the metal screw not only plays the fixed action, further strengthens the electric connection of electrode and PCB board simultaneously, also can adopt other forms's detachable connection structure.

Example four

The switch power supply adopts the three-transformer connection circuit of the embodiment.

Claims

1. The utility model provides a transformer skeleton, includes the skeleton body, its characterized in that: the bottom of the framework body is provided with at least one pair of conductive plates which are used as electrodes and electrically connected with outgoing lines of a transformer coil winding, and when the transformer is installed on a PCB, the conductive plates are detachably and electrically connected with connecting terminals of the PCB; the connection terminal is located at a position on or above the surface of the PCB and is connected with the conductive plate at the position.

2. The transformer skeleton of claim 1, wherein: the framework body is also provided with a conductive plate mounting hole which is used for being detachably connected with the PCB.

3. The transformer skeleton of claim 2, wherein: the conducting plate is provided with more than one lead mounting groove or lead mounting hole.

4. The transformer skeleton of claim 3, wherein: the framework body comprises a bottom plate and a mounting frame; the transformer coil is arranged on the mounting frame, the conductive plate is located at the lower end of the bottom plate, the conductive plate mounting hole is located on the bottom plate, and the lead mounting groove or the lead mounting hole is also located on the bottom plate.

5. A transformer, characterized by: the transformer framework comprises a transformer coil and the transformer framework as claimed in any one of claims 1 to 4, wherein the transformer coil is wound on the transformer framework, and a leading-out wire of the transformer coil is connected to the conductive plate.

6. The transformer of claim 5, wherein: the lead-out wire is welded on the conductive plate.

7. A transformer connecting circuit, comprising a PCB board and a transformer connected on the PCB board, characterized in that, the transformer comprises a transformer coil and a transformer framework of any claim 1-4, the transformer coil is wound on the transformer framework, the leading-out wire of the transformer coil is connected on the conductive plate; the PCB is provided with a connecting terminal matched with the conductive plate, and the conductive plate is detachably and electrically connected with the connecting terminal on the PCB; the connection terminal is located at a position on or above the surface of the PCB and is connected with the conductive plate at the position.

8. The transformer connection circuit according to claim 7, wherein: the connecting terminal is a protruding terminal protruding out of the surface of the PCB.

9. The transformer connection circuit according to claim 7 or 8, wherein: the current conducting plate through a fastener with connecting terminal on the PCB board can dismantle and be connected.

10. A switch power supply, comprising a PCB board and a transformer connected on the PCB board, characterized in that, the transformer comprises a transformer coil and a transformer framework of any claim 1-4, the transformer coil is wound on the transformer framework, the leading-out wire of the transformer coil is connected on the conductive plate; the PCB is provided with a connecting terminal matched with the conductive plate, and the conductive plate is detachably and electrically connected with the connecting terminal on the PCB; the connection terminal is located at a position on or above the surface of the PCB and is connected with the conductive plate at the position.

11. The switching power supply according to claim 10, wherein: the current conducting plate through a fastener with connecting terminal on the PCB board can dismantle and be connected.