CN215527432U - ACDC switching power supply module and plug-in transformer framework and transformer thereof - Google Patents
ACDC switching power supply module and plug-in transformer framework and transformer thereof Download PDFInfo
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- CN215527432U CN215527432U CN202121401277.7U CN202121401277U CN215527432U CN 215527432 U CN215527432 U CN 215527432U CN 202121401277 U CN202121401277 U CN 202121401277U CN 215527432 U CN215527432 U CN 215527432U
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Abstract
The utility model provides an ACDC switch power module, a plug-in transformer framework and a transformer thereof, wherein the plug-in transformer framework comprises two bases and a winding frame horizontally arranged between the two bases, metal pins for connecting a winding wire and an external circuit and a wire groove with a slope are respectively embedded on the two bases, and an inwards concave hollow part is formed on the second base; simultaneously, the wall thickness of the bottom of the winding frame is thickened, the primary side wire is tightly attached to a slope of the wire guide groove and is completely sunk into the wire guide groove, the primary side wire and the secondary side wire are completely separated, the safety distance between the primary side wire and the secondary side wire is ensured, the situation that the original safety distance of the primary side wire and the secondary side wire is met by additionally arranging a retaining wall, a sleeve, reversely-folded adhesive paper and the like at the take-up position is avoided, therefore, the full-machine winding is realized, the material cost and the working hour cost are reduced, and the production efficiency is improved while the reliability and the consistency are improved.
Description
Technical Field
The utility model relates to the field of switch power supply design, in particular to a plug-in transformer which is suitable for switch power supply products requiring glue filling and having small volume and high automation degree.
Background
The existing transformer framework comprises two bases and a winding frame arranged between the bases, metal pins used for connecting a winding wire and an external circuit are embedded below the two bases respectively, and the lower surfaces of the two bases are provided with wire grooves respectively.
In order to increase the electric gap and creepage distance between the conductive parts of the primary circuit and the secondary circuit, the common method needs to greatly increase the size of the two bases, or adopts a flying wire mode, and uses a longer three-layer insulated wire to be led out through a metal pin and a wire groove to be directly used as a wire of the secondary circuit, or needs to use an insulated adhesive tape to wrap a magnetic core, a winding and a framework for assembly.
Due to the fact that the size of the two bases is greatly increased, the structure of the circuit board matched with the base needs to be changed, certain cost is brought by using the flying wire insulating tape, extra processes such as welding wires and winding the insulating tape are needed, the reliability of products is affected to a certain degree, and meanwhile the production cost of the transformer is increased. Meanwhile, in order to prevent the primary side wire and the secondary side wire from contacting with each other, a retaining wall, a sleeve, reverse-folding adhesive paper and the like are generally required to be added at the take-up and take-up position, and an additional process is required to influence the automatic production of the transformer.
Therefore, there is a need for improvements in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a plug-in transformer framework which is suitable for a switching power supply module requiring glue filling, can increase the electrical clearance and creepage distance of conductive parts of a transformer, realizes automatic assembly of a magnetic core, and can effectively prevent the mutual contact of original and secondary wires.
In order to realize the purpose, the utility model is realized by the following technical scheme:
the utility model provides a plug-in components transformer skeleton, includes first base, second base and the bobbin of setting between first base and second base, and the both ends of bobbin outwards extend and form the blade, inlays on first base and the second base to be equipped with the metal pin that is used for connecting wire winding and external circuit, and the lower surface of first base and second base is opened has the wire casing of taking the slope, its characterized in that: the bobbin between the first base and the second base is horizontally arranged, and the second base is provided with an inward concave hollow part.
Preferably, the opening length of the hollow portion is not more than half of the length of the second base and is more than one third of the length of the second base.
Preferably, the open area of the hollow portion is equal to or larger than one third of the area of the upper surface of the second base.
Preferably, the concave surface of the hollow part is a cambered surface.
Preferably, the number of the metal pin leads on the first base is 4, and the metal pin leads are used as electric connection terminals of a primary circuit, and the number of the metal pin leads on the second base is 2, and the metal pin leads are used as electric connection terminals of a secondary circuit.
Preferably, a groove is formed between the wire groove of the second base and the metal pin.
Preferably, the wall thickness of the bottom of the bobbin is larger than that of the other surface of the bobbin.
The utility model provides a plug-in components transformer, is applicable to the switching power supply module who requires the encapsulating, its characterized in that: including the aforesaid wantonly plug-in components skeleton transformer, magnetic core and wire winding, plug-in components skeleton transformer's bobbin is equipped with the magnetic core mounting hole, the magnetic core is installed in the magnetic core mounting hole, the wire winding is around locating on the bobbin, just wire-wound lead end pass through the metallic channel install in on the metal pin.
An ACDC switching power supply module is characterized in that: the plug-in transformer and the PCB are included, and the plug-in transformer is inserted on the upper surface of the PCB.
Due to the application of the technical scheme, the utility model has the beneficial effects that:
(1) the part of the second base, which is embedded with the metal pin, is widened by a certain length, and the part of the second base, which is not embedded with the metal pin, is cut off, namely the second base is provided with an inwards concave hollow part, so that the use space of the power supply module can be effectively provided on the basis of meeting the electric clearance and creepage distance between the primary side circuit and the secondary side circuit;
(2) the wall thickness of the bottom of the winding frame is thickened, so that the wire can be completely sunk into the chute when the wire is taken up, the original secondary wire can be effectively separated, and the contact is prevented;
(3) by using the utility model, the safety requirements can be met without additionally arranging a retaining wall, a sleeve, reverse-folded gummed paper and the like at the take-up and take-up position, so that the material is reduced, full machine winding can be realized, and the production cost of the transformer is saved.
Drawings
FIG. 1 is a schematic diagram of the construction of the plug-in transformer bobbin of the present invention;
FIG. 2 is a schematic illustration of the wall thickness of the bobbin of the plug-in transformer bobbin of the present invention;
FIG. 3 is a schematic diagram of a plug-in transformer bobbin with sloped trunking of the present invention;
fig. 4 is a schematic structural view of the plug-in transformer of the present invention mounted on a PCB board.
Detailed Description
The utility model is described in further detail below with reference to the figures and the specific embodiments.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
Referring to fig. 1, which shows a schematic structural diagram of the plug-in transformer bobbin of the present invention, the plug-in transformer bobbin of this embodiment includes two bases 1, 2 and a bobbin 7 horizontally disposed between the bases, two ends of the bobbin 7 extend outward to form blades 71, 72, and metal pins 6 and 5 for connecting to an external circuit are respectively embedded on the bases 1 and 2. In this embodiment, the number of the metal pins 6 led out from the base 1 is 4, and the metal pins 5 led out from the base 2 are 2 and used as the electrical connection terminals of the secondary circuit.
As shown in fig. 2, the thickness of the wall thickness at the bottom of the winding groove 7 is greater than the thickness of the wall thickness on the other three sides.
As shown in fig. 3, the lower surfaces of the base 1 and the base 2 are respectively provided with a wire groove 3 and a wire groove 4 with slopes.
A recess 8 has been seted up between 2 pins of metal pin 5 on base 2 and wire casing 3 in this embodiment, 2 pins of metal pin 5 can closely adjacent setting, with the occupation space of reducing metal pin on base 2 as far as possible on satisfying the basis of electric interval requirement, thereby on the basis of guaranteeing base 2 fixed stay intensity, the part that will enlarge as far as possible and not inlay dress metal pin 5 is amputated in order to form inside recessed void portion 9, void portion 9 can form the accommodation space of peripheral components and parts, so that improve the space utilization in the power module packaging space more effectively. Preferably, the concave surface of the hollow part 9 can be a cambered surface so as to better adapt to the appearance structure of the vertical electrolytic capacitor.
In order to meet different safety distance requirements, the width of the base 2 can be increased in a small range, and the thickness of the wall of the bottom of the bobbin 7 can be increased. Through the wire groove 3 with the slope at the bottom of the base, the three layers of insulated wires are led out after the transformer is wound and directly wound on the metal pins 5 and are welded together with the metal pins, and no three layers of insulated wires are led out for flying wire processing, so that the process difficulty is reduced, and the welding reliability is enhanced; meanwhile, the bottom thickness of the winding frame 7 is thickened, so that the primary wire can be tightly attached to the slope of the wire guide groove 4 and completely sunk into the wire guide groove 4, the primary wire and the secondary wire are completely separated, the safety distance between the primary wire and the secondary wire is ensured, and the situation that the safety distance of the primary wire and the secondary wire is met by adding an additional retaining wall, a sleeve, reverse-folding adhesive paper and the like at the take-up position is avoided, so that the full-machine winding is realized, the material cost and the working hour cost are reduced, the reliability and the consistency are improved, and the production efficiency is improved.
The bobbin 7 is horizontally arranged, so that the spacing distance between the metal pins 5 and 6 on the bases 1 and 2 is directly increased by utilizing the inherent structure of the transformer bobbin, the electric clearance and the creepage distance of the primary and secondary side circuits are naturally increased, feasible design conditions are provided for simplifying the safety structure design of the transformer with the same volume, and the safety structure design space is further enlarged.
A plug-in transformer is suitable for a switching power supply module requiring glue filling and comprises the plug-in transformer framework, a magnetic core and a winding wire, wherein a magnetic core mounting hole (not shown) is formed in a winding frame 7 of the plug-in transformer framework, the magnetic core is mounted in the magnetic core mounting hole, the winding wire is wound on the winding frame 7, and the lead ends of the winding wire are mounted on metal pins 5 and 6 through wire grooves 3 and 4, as shown in figure 4, the plug-in transformer is a structural schematic diagram of the plug-in transformer mounted on a PCB.
The embodiments of the present invention are not limited thereto, and various other modifications, substitutions or alterations can be made to the present invention in light of the above basic technical ideas of the present invention and the common technical knowledge and conventional means in the field of the present invention within the scope of the present invention.
Claims (9)
1. The utility model provides a plug-in components transformer skeleton, includes first base, second base and the bobbin of setting between first base and second base, and the both ends of bobbin outwards extend and form the blade, inlays on first base and the second base to be equipped with the metal pin that is used for connecting wire winding and external circuit, and the lower surface of first base and second base is opened has the wire casing of taking the slope, its characterized in that: the bobbin between the first base and the second base is horizontally arranged, and the second base is provided with an inward concave hollow part.
2. The plug-in transformer cradle of claim 1, wherein: the length of the hollow part is less than or equal to half of the length of the second base and more than one third of the length of the second base.
3. The plug-in transformer cradle of claim 1, wherein: the opening area of the hollow part is more than or equal to one third of the area of the upper surface of the second base.
4. The plug-in transformer cradle of claim 1, wherein: the concave surface of the hollow part is a cambered surface.
5. The plug-in transformer cradle of claim 1, wherein: the number of the metal pins on the first base is 4, and the metal pins are used as electric connecting terminals of a primary circuit, and the number of the metal pins on the second base is 2, and the metal pins are used as electric connecting terminals of a secondary circuit.
6. The plug-in transformer cradle of claim 1, wherein: a groove is formed between the wire groove of the second base and the metal pin.
7. The plug-in transformer cradle of claim 1, wherein: the wall thickness of the bottom of the winding frame is larger than that of other surfaces of the winding frame.
8. The utility model provides a plug-in components transformer, is applicable to the switching power supply module who requires the encapsulating, its characterized in that: the plug-in transformer bobbin of any one of claims 1 to 7, comprising a magnetic core mounting hole formed in a bobbin of the plug-in transformer bobbin, a magnetic core mounted in the magnetic core mounting hole, and a winding wire wound on the bobbin, wherein a lead end of the winding wire is mounted on the metal pin through a wire groove.
9. An ACDC switching power supply module is characterized in that: the plug-in transformer comprises the plug-in transformer and a PCB board of claim 8, wherein the plug-in transformer is inserted on the upper surface of the PCB board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121401277.7U CN215527432U (en) | 2021-06-23 | 2021-06-23 | ACDC switching power supply module and plug-in transformer framework and transformer thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121401277.7U CN215527432U (en) | 2021-06-23 | 2021-06-23 | ACDC switching power supply module and plug-in transformer framework and transformer thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215527432U true CN215527432U (en) | 2022-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121401277.7U Active CN215527432U (en) | 2021-06-23 | 2021-06-23 | ACDC switching power supply module and plug-in transformer framework and transformer thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215527432U (en) |
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2021
- 2021-06-23 CN CN202121401277.7U patent/CN215527432U/en active Active
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