CN217606669U

CN217606669U - Switching power supply transformer structure easy to assemble

Info

Publication number: CN217606669U
Application number: CN202221168988.9U
Authority: CN
Inventors: 叶灼; 唐景新
Original assignee: Changzhou Chuanglian Power Supply Co ltd
Current assignee: Changzhou Chuanglian Power Supply Co ltd
Priority date: 2022-05-16
Filing date: 2022-05-16
Publication date: 2022-10-18
Anticipated expiration: 2032-05-16

Abstract

The utility model belongs to the technical field of the transformer technique and specifically relates to a switching power supply transformer structure of easily assembling, including the magnetic core, primary and secondary, the magnetic core divide into top magnetic core and bottom magnetic core, secondary divide into top secondary copper sheet and bottom secondary copper sheet, be equipped with on the opposite face of top magnetic core and bottom magnetic core with hole complex magnetic core center pillar, still include the skeleton, the skeleton tip is equipped with a plurality of skeleton terminals, top secondary copper sheet and bottom secondary copper sheet set up the last lower extreme at the skeleton respectively, the skeleton center also corresponds to open there is the hole, top magnetic core and bottom magnetic core butt each other to the magnetic core center pillar that penetrates the hole, make the skeleton of installing primary and secondary arrange in between top magnetic core and the bottom magnetic core. This transformer structure passes through skeleton, copper sheet and magnetic core complex simple and easy assembly method, saves one set of base mould, shortens the assemble duration, simplifies the lead wire hitching leg operation of primary coil, guarantees the stability that the transformer used.

Description

Switching power supply transformer structure easy to assemble

Technical Field

The utility model belongs to the technical field of the transformer technique and specifically relates to an easy assembly's switching power supply transformer structure.

Background

At present, a common planar transformer structure usually designs a ferrite magnetic core to be composed of two parts which are in an up-down involution type, a primary winding and two secondary windings which are separately arranged at the upper end and the lower end of the primary winding are clamped between the involution type ferrite magnetic cores by using corresponding auxiliary components, then the ends of the primary winding and the two secondary windings are led out to pins, and the pins are fixedly welded on a switch power supply PCB in a plug-in mode.

When the current switching power supply transformer is large in secondary current, a secondary side usually adopts a copper sheet structure, the assembly of the whole transformer is divided into a primary coil, a secondary copper sheet, a base and a magnetic core, the outgoing line of the primary coil needs to be hung on a base terminal again after the assembly, and the whole transformer is complex and not easy to assemble.

SUMMERY OF THE UTILITY MODEL

In order to solve the more loaded down with trivial details problem of the lead wire hitching leg of current transformer, the utility model provides an easy switching power supply transformer structure of assembling replaces traditional base structure through the skeleton of particular structure, when making things convenient for the wire winding hitching leg, is convenient for secondary copper sheet's stable installation to effectively guarantee the stability that the transformer used.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a switching power supply transformer structure of easily assembling, including the magnetic core, primary and secondary, the magnetic core divide into top magnetic core and bottom magnetic core, secondary divide into top secondary copper sheet and bottom secondary copper sheet, top secondary copper sheet and bottom secondary copper sheet symmetry set up the last lower extreme at primary, one side that top secondary copper sheet deviates from primary is equipped with the top magnetic core, one side that bottom secondary copper sheet deviates from primary is equipped with the bottom magnetic core, primary and secondary center open have the hole that link up, be equipped with the magnetic core center pillar with hole complex on the opposite face of top magnetic core and bottom magnetic core, still include the skeleton, the skeleton tip is equipped with a plurality of skeleton terminals, primary winds at the skeleton middle part, top secondary copper sheet and bottom secondary copper sheet set up respectively at the last lower extreme of skeleton, the skeleton center also corresponds to open there is the hole, top magnetic core and bottom magnetic core pair are to the mutual butt joint of the magnetic core that penetrates the hole, make the skeleton of installing primary and secondary arrange the magnetic core between top magnetic core and bottom magnetic core and magnetic core, through the skeleton, copper sheet and the simple and easy assembly mode of complex, save the base structure, shorten the assembly time, simplify the lead wire hanger operation of primary.

In some embodiments, the bobbin includes a base plate, a winding post and a mounting plate, the mounting plate and the base plate are respectively disposed at upper and lower ends of the winding post, so that a winding cavity for winding the primary winding is formed between the mounting plate and the base plate, and the primary winding is wound on the winding post.

In some embodiments, the upper surface of the mounting plate is provided with an upper convex ring, the upper convex ring is arranged around the inner hole of the framework and is just clamped in the inner hole of the top secondary copper sheet, so that the top secondary copper sheet is stably sleeved on the upper convex ring.

In some embodiments, a mounting cavity capable of accommodating the bottom secondary copper sheet is formed below the substrate, a lower convex ring is arranged in the mounting cavity, the lower convex ring is arranged around an inner hole of the framework and is just clamped in the inner hole of the bottom secondary copper sheet, and the bottom secondary copper sheet is stably sleeved on the lower convex ring.

In some embodiments, the installation cavity is further provided with a limiting protrusion for limiting the bottom secondary copper sheet, the limiting protrusion is divided into a limiting strip, a limiting block and a limiting angle block, the limiting strip is arranged at the circular ring end of the bottom secondary copper sheet, the limiting block and the limiting angle block are arranged at the pin end of the bottom secondary copper sheet, and the copper sheet is limited and fixed from the periphery of the copper sheet.

In some embodiments, a positioning notch for limiting the pin of the bottom secondary copper sheet is formed in the substrate between the limiting block and the limiting corner block, so that the pin can be clamped into the positioning notch for limiting and fixing.

In some embodiments, the limiting block is provided with a positioning hole for limiting the pin of the top secondary copper sheet, so that the pin can conveniently extend into the positioning hole for limiting and fixing.

The utility model has the advantages that,

(1) The utility model provides a switching power supply transformer structure easy to assemble, which saves a set of base mould, shortens the assembly time, simplifies the lead hanging pin operation of a primary coil and ensures the stability of the transformer use through a simple assembly mode of matching a framework, a copper sheet and a magnetic core;

(2) The utility model provides a switching power supply transformer structure easy to assemble, which realizes effective limit of a secondary copper sheet through the arrangement of convex rings on the upper end surface and the lower end surface of a framework, further simplifies the assembly process and improves the assembly efficiency;

(3) The utility model provides a switching power supply transformer structure of easily assembling through setting up spacing arch and the locating hole on the skeleton, realizes effectively spacing to the copper sheet pin, guarantees the stability of copper sheet installation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is an exploded view of the overall structure of a transformer;

FIG. 2 is a first perspective assembly view of the transformer;

FIG. 3 is a second perspective assembly view of the transformer;

FIG. 4 is a schematic top view of the skeletal frame;

FIG. 5 is a schematic view of the bottom structure of the skeleton;

in the figure, 1, a magnetic core, 11, a top magnetic core, 12, a bottom magnetic core, 2, a primary winding, 3, a secondary winding, 31, a top secondary copper sheet, 32, a bottom secondary copper sheet, 4, a framework, 41, a framework terminal, 42, a substrate, 43, a winding post, 44, a mounting plate, 45, a winding cavity, 46, a mounting cavity, 47, an upper convex ring, 48, a lower convex ring, 49, a limiting protrusion, 491, a limiting strip, 492, a limiting block, 493, a limiting corner block, 5, an inner hole, 6, a magnetic core center column, 7, a positioning notch and 8 a positioning hole are arranged.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention.

Traditional planar transformer includes magnetic core 1, primary 2 and secondary 3, magnetic core 1 divide into top magnetic core 11 and bottom magnetic core 12, secondary 3 divide into top secondary copper sheet 31 and bottom secondary copper sheet 32, top secondary copper sheet 31 and bottom secondary copper sheet 32 symmetry set up the upper and lower end at primary 2, one side that top secondary copper sheet 31 deviates from primary 2 is equipped with top magnetic core 11, one side that bottom secondary copper sheet 32 deviates from primary 2 is equipped with bottom magnetic core 12, primary 2 and secondary 3 center of winding all open the hole 5 that link up, be equipped with on the opposite face of top magnetic core 11 and bottom magnetic core 12 with hole 5 complex magnetic core center pillar 6. When the secondary current is large, the secondary winding 3 usually adopts a copper sheet structure, the assembly of the whole planar transformer is divided into four parts, namely a primary winding 2, a secondary copper sheet, a base and a magnetic core 1, and after the assembly, the outgoing line of the primary winding 2 needs to be hung on the base terminal again, so that the whole planar transformer is complex and is not easy to assemble.

To the above-mentioned problem, design a switching power supply transformer structure of easily assembling, as shown in fig. 1-3, on the basis of current structure, add skeleton 4, the 4 tip of skeleton is equipped with a plurality of skeleton terminals 41, primary 2 winds at 4 middle parts of skeleton, top secondary copper sheet 31 and bottom secondary copper sheet 32 set up the upper and lower end at skeleton 4 respectively, skeleton 4 center also corresponds to and has opened hole 5, top magnetic core 11 and bottom magnetic core 12 are involutory, make the mutual butt of magnetic core center pillar 6 that penetrates hole 5, thereby make the skeleton 4 of installing primary 2 and secondary 3 arrange in between top magnetic core 11 and bottom magnetic core 12.

Skeleton 4 through specific structure, combine skeleton 4 and base as an organic whole to saved the base structure, lead wire directly hangs on skeleton terminal 41 in the coiling process, when fixed lead wire makes things convenient for wire winding, accomplish lead wire hitching leg process, skeleton 4 is all reserved a fixed chamber of secondary copper sheet from top to bottom, wholly form the assembly methods of skeleton 4, copper sheet and 1 triplex of magnetic core, simplify assembly process, when saving one set of base mould, assembly man-hour is far less than current structure.

As shown in fig. 4 and 5, in order to integrate the bobbin 4 and the base, the bobbin 4 includes a substrate 42, a winding post 43 and a mounting plate 44, the mounting plate 44 and the substrate 42 are respectively disposed at the upper and lower ends of the winding post 43, so that a winding cavity 45 for winding the primary winding 2 is formed between the mounting plate 44 and the substrate 42, which not only saves the conventional base structure, but also realizes the stable mounting of the secondary copper sheet.

In order to realize the stable installation of the top secondary copper sheet 31, an upper convex ring 47 is arranged on the upper surface of the installation plate 44, and the upper convex ring 47 is arranged around the inner hole 5 of the framework 4 and is just clamped in the inner hole 5 of the top secondary copper sheet 31.

In order to realize the stable installation of the bottom secondary copper sheet 32, an installation cavity 46 capable of accommodating the bottom secondary copper sheet 32 is formed below the substrate 42, a lower convex ring 48 is arranged in the installation cavity 46, and the lower convex ring 48 is arranged around the inner hole 5 of the framework 4 and is just clamped in the inner hole 5 of the bottom secondary copper sheet 32.

The upper convex ring 47 and the lower convex ring 48 are symmetrically arranged on the two sides of the inner hole 5, and the requirement for increasing the safety distance is met while the secondary copper sheet is fixed.

In order to further limit and fix the bottom secondary copper sheets 32, a limiting protrusion 49 is arranged in the mounting cavity 46, the limiting protrusion 49 is divided into a limiting strip 491, a limiting block 492 and a limiting angle block 493, the limiting strip 491 is arranged at the circular ring end of the bottom secondary copper sheets 32, and the limiting block 492 and the limiting angle block 493 are arranged at the pin ends of the bottom secondary copper sheets 32, so that the bottom secondary copper sheets 32 are clamped between the limiting protrusions 49.

In order to further limit and fix the pins of the secondary copper sheets, a positioning notch 7 is formed in the substrate 42 between the limiting block 492 and the limiting corner block 493 and used for clamping the pins of the bottom secondary copper sheet 32, and a positioning hole 8 is formed in the limiting block 492 and used for clamping the pins of the top secondary copper sheet 31.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides an easy switching power supply transformer structure of assembling, includes magnetic core (1), primary winding (2) and secondary winding (3), magnetic core (1) divide into top magnetic core (11) and bottom magnetic core (12), secondary winding (3) divide into top secondary copper sheet (31) and bottom secondary copper sheet (32), top secondary copper sheet (31) and bottom secondary copper sheet (32) symmetry set up the upper and lower end at primary winding (2), one side that top secondary copper sheet (31) deviates from primary winding (2) is equipped with top magnetic core (11), one side that bottom secondary copper sheet (32) deviates from primary winding (2) is equipped with bottom magnetic core (12), primary winding (2) and secondary winding (3) center all open hole (5) that link up, be equipped with center pillar (6) with hole (5) complex on the relative surface of top magnetic core (11) and bottom magnetic core (12), its characterized in that still includes skeleton (4), skeleton (4) tip is equipped with a plurality of terminals (41), primary winding (2) coiling is in the middle part of skeleton (4), the skeleton (31) and secondary winding (4) top secondary copper sheet (32) center open also correspond down the skeleton (4) respectively, the top magnetic core (11) and the bottom magnetic core (12) are combined, the magnetic core center pillars (6) penetrating into the inner hole (5) are mutually abutted, and therefore the framework (4) provided with the primary winding (2) and the secondary winding (3) is arranged between the top magnetic core (11) and the bottom magnetic core (12).

2. An easily assembled transformer structure for a switching power supply according to claim 1, wherein said bobbin (4) comprises a base plate (42), a winding post (43) and a mounting plate (44), said mounting plate (44) and said base plate (42) are respectively disposed at the upper and lower ends of said winding post (43), so that a winding cavity (45) for winding said primary winding (2) is formed between said mounting plate (44) and said base plate (42).

3. An easily assembled transformer structure for switching power supplies according to claim 2, characterized in that the upper surface of the mounting plate (44) is provided with an upper protruding ring (47), and the upper protruding ring (47) is arranged around the inner hole (5) of the framework (4) and is just clamped in the inner hole (5) of the top secondary copper sheet (31).

4. The transformer structure of the switching power supply easy to assemble as claimed in claim 2, wherein a mounting cavity (46) capable of accommodating the bottom secondary copper sheet (32) is formed below the substrate (42), a lower protruding ring (48) is arranged in the mounting cavity (46), and the lower protruding ring (48) is arranged around the inner hole (5) of the framework (4) and is just clamped in the inner hole (5) of the bottom secondary copper sheet (32).

5. The transformer structure of the switching power supply easy to assemble as claimed in claim 4, wherein a limiting protrusion (49) for limiting the bottom secondary copper sheet (32) is further provided in the mounting cavity (46), the limiting protrusion (49) is divided into a limiting strip (491), a limiting block (492) and a limiting corner block (493), the limiting strip (491) is disposed at the circular ring end of the bottom secondary copper sheet (32), and the limiting block (492) and the limiting corner block (493) are disposed at the pin end of the bottom secondary copper sheet (32).

6. The transformer structure of claim 5, wherein a positioning notch (7) for pin limitation of the bottom secondary copper sheet (32) is formed on the substrate (42) between the limiting block (492) and the limiting corner block (493).

7. An easily assembled transformer structure for switching power supply according to claim 5, wherein said stopper (492) is provided with a positioning hole (8) for pin-limiting of the top secondary copper sheet (31).