CN218826553U

CN218826553U - But many windings flat transformer

Info

Publication number: CN218826553U
Application number: CN202223239774.9U
Authority: CN
Inventors: 叶见新; 黄浩鑫; 黄胜
Original assignee: Guilin Pingle Zhongtai Electronic Technology Co ltd
Current assignee: Guilin Pingle Zhongtai Electronic Technology Co ltd
Priority date: 2022-12-03
Filing date: 2022-12-03
Publication date: 2023-04-07
Anticipated expiration: 2032-12-03

Abstract

The utility model relates to the technical field of transformers, in particular to a multi-winding flat transformer, which comprises a winding framework, a coil and two magnetic cores, wherein the winding framework is of a horizontal flat sleeve-shaped structure, the coil is wound outside the winding framework, the magnetic cores are of an E-shaped structure, and the two magnetic cores are respectively transversely inserted along the two ends of the winding framework and are mutually butted, so that the coil and the magnetic cores are matched in an electromagnetic induction way; the lower part of the winding framework is respectively extended and molded outwards along the two ends of the winding framework, the lower end of the lead part is provided with a plurality of lead grooves facing the winding framework, the lead grooves extend in an expanding manner along the extending tail end of the lead part, and the extending end part of the lead part is provided with a plurality of pins; the winding framework with the flat sleeve-shaped structure is combined with the magnetic core with the E-shaped structure to arrange the coil, so that the whole transformer can reach the flat structure, and the whole height of the transformer is fully reduced.

Description

But many windings flat transformer

Technical Field

The utility model belongs to the technical field of the transformer technique and specifically relates to a but many windings flat transformer is related to.

Background

The transformer is a device for changing alternating voltage by utilizing the principle of electromagnetic induction, mainly comprises components such as a magnetic core, a winding, insulation, a lead wire and the like, and has the main functions of: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization (magnetic saturation transformer), and the like.

Along with the popularization of electrified source product is more and more, wherein the transformer is used to essential needs, and in order to improve and use convenient degree, electrified source product miniaturization sets up and deepens people's mind, in order to facilitate the storage, some electrified source products can be set up to flat structure, can the whole thickness of greatly reduced, for example the emergent start power of car, the setting of flat structure can be convenient for place it in the hidden dark check of car trunk, and because the reason of voltage ware, its internal power can receive the restriction of voltage ware height, can lead to its internal power space to occupy great, and when transformer winding is more, the transformer volume is less, the arranging of its lead wire is compacter, it lays wire to be difficult to carry out reasonable dispersion, to this, it is necessary to provide a section of modified flat transformer to above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is not enough to overcome above-mentioned condition, aims at providing the technical scheme that can solve above-mentioned problem.

A multi-winding flat transformer comprises a winding framework, coils and two magnetic cores, wherein the winding framework is of a transverse flat sleeve-shaped structure, the coils are wound on the outer side of the winding framework, the magnetic cores are of an E-shaped structure, the two magnetic cores are respectively inserted transversely along two ends of the winding framework and are mutually butted, and the coils and the magnetic cores are matched in an electromagnetic induction mode; outwards extend the shaping respectively along its both ends in bobbin's lower part has lead wire portion, and many lead wire grooves towards bobbin are seted up to the lower extreme of lead wire portion, and many lead wire grooves are the extension type along the extension end of lead wire portion and extend, and the extension tip of lead wire portion is provided with many pins, has still covered the heating panel at the lower extreme of lead wire portion, and the heating panel is connected with the coil heat conductivity.

Preferably, two ends of the bobbin are respectively extended and formed with a blocking frame, and the coil is limited between the two blocking frames.

Preferably, the lead slot is connected and matched with the blocking frame, and the end part of the coil crosses the blocking frame and then extends to be welded on the lead along the lead slot.

Preferably, the bobbin is a flat square structure, two sides of the lead part extend outwards, and the plurality of lead slots are distributed in an expanding manner from one end close to the bobbin to one end far away from the bobbin.

Preferably, the magnetic core includes the portion of stretching into that corresponds at the coil inboard, corresponds in the extension of the coil outside and an organic whole connection in the transition portion of stretching into and extension, and the magnetic core inserts the inside of locating bobbin through the portion of stretching into, and the mutual butt joint cooperation of the portion of stretching into and the extension of two magnetic cores.

Preferably, the lower end of the transition part is abutted to the lead part, the middle of the lower end of the transition part is provided with a limiting groove, and a limiting strip matched with the limiting groove is formed on the lead part.

Preferably, the heat dissipation plate is provided with insulating heat conduction glue, and the heat dissipation plate is connected with the coil in a heat conduction mode through the insulating heat conduction glue.

Compared with the prior art, the beneficial effects of the utility model are that:

the winding framework with the flat sleeve-shaped structure is adopted, and the coil is arranged by combining the magnetic core with the E-shaped structure, so that the whole transformer can reach the flat structure, and the height of the whole transformer is fully reduced;

the lower part of the winding framework is respectively extended and molded along the two ends of the winding framework to form lead parts, the lower end of each lead part is provided with a plurality of lead grooves corresponding to the winding framework, the lead grooves are extended in an expanding manner along the extending tail ends of the lead parts, the leads can be reasonably distributed and uniformly scattered under the condition of low winding width, and the extending end parts of the lead parts are provided with a plurality of pins;

the heating panel is covered at the lower end of the lead part, and is connected with the coil in a heat conduction mode, so that a good heat dissipation effect can be guaranteed, a plurality of lead grooves can be shielded by the heating panel, the heating panel is made of insulating materials, and the whole heating panel plays a role in heat dissipation, insulation and shielding.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

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

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic diagram of the explosion structure of the present invention;

fig. 3 is a schematic structural view of fig. 3 inverted in the present invention.

The reference numerals and names in the figures are as follows:

the coil comprises a bobbin 10, a blocking frame 11, a coil 20, a magnetic core 30, an extending part 31, an extending part 32, a transition part 33, a limiting groove 34, a lead part 40, a lead groove 41, a pin 42, a heat dissipation plate 43, insulating heat conducting glue 44 and a limiting strip 45.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, in an embodiment of the present invention, a multi-winding flat transformer includes a bobbin 10, a coil 20 and two magnetic cores 30, the bobbin 10 is a horizontal flat sleeve-shaped structure, the coil 20 is wound outside the bobbin 10, the magnetic cores 30 are E-shaped structures, and the two magnetic cores 30 are inserted and butted with each other transversely along two ends of the bobbin 10, so that the coil 20 and the magnetic cores 30 are matched by electromagnetic induction; the utility model adopts the winding frame 10 with flat sleeve-shaped structure, and combines the magnetic core 30 with E-shaped structure to arrange the coil 20, so that the whole body can reach the flat structure, thereby fully reducing the height of the whole transformer;

on the basis, the lower part of the bobbin 10 is respectively extended and molded with the lead parts 40 along the two ends of the lower part, the lower end of each lead part 40 is provided with a plurality of lead grooves 41 corresponding to the bobbin 10, the plurality of lead grooves 41 are extended in an expanding manner along the extending tail ends of the lead parts 40, when the windings of the transformer coil 20 are arranged more, the leads can be independently separated through the plurality of lead grooves 41, the plurality of lead grooves 41 are extended in an expanding manner, the bobbin 10 can be arranged in a flat square body structure, then the two sides of each lead part 40 are extended outwards, the plurality of lead grooves 41 are distributed in an expanding manner from one end close to the bobbin 10 to one end far away from the bobbin 10, the leads can be reasonably distributed and uniformly dispersed under the condition that the winding width is lower, the extending end parts of the lead parts 40 are provided with a plurality of pins 42, and the plurality of leads are uniformly dispersed and then welded on the corresponding pins 42, so that the subsequent electric connection is facilitated; because the overall structure is flat, the condition that the lower part of the transformer is in close contact with a circuit board is considered, the heat dissipation difficulty of the transformer is larger, therefore, the lower end of the lead part 40 is covered with the heat dissipation plate 43, the heat dissipation plate 43 is provided with the insulating heat-conducting glue 44, the heat dissipation plate 43 is in heat conduction connection with the coil 20 through the insulating heat-conducting glue 44, the good heat dissipation effect can be ensured, the heat dissipation plate 43 can shield a plurality of lead slots 41, the heat dissipation plate 43 needs to be made of insulating materials, the whole body has the functions of heat dissipation, insulation and shielding, the lower end of the lead part 40 can be directly fixed in an adhesive mode, the lead slots 41 can be wired under the condition that the lower end is exposed, the heat dissipation plate 43 is fixed after wiring, and the convenient and fast assembling and wiring effect is achieved.

Further, the both ends of bobbin 10 extend the shaping respectively and have and block frame 11, and coil 20 limits and blocks between frame 11 at two, and lead wire groove 41 with block frame 11 and link up the cooperation, the tip of coil 20 stride and block behind the frame 11 and extend to weld along lead wire groove 41 and establish on pin 42, prevent the wire winding confusion, guarantee that the wiring is quick, improve wire winding efficiency.

Further, the magnetic core 30 comprises an extending portion 31 corresponding to the inner side of the coil 20, an extending portion 32 corresponding to the outer side of the coil 20, and a transition portion 33 integrally connected to the extending portion 31 and the extending portion 32, the magnetic core 30 is inserted into the bobbin 10 through the extending portion 31, and the extending portions 31 and the extending portions 32 of the two magnetic cores 30 are in butt-joint fit with each other, so that the coil 20 and the magnetic core 30 can be tightly fitted, and a more efficient electromagnetic induction fit is achieved; the lower extreme and the lead wire portion 40 of transition portion 33 offset, and spacing groove 34 has been seted up at the middle part of transition portion 33 lower extreme, and the last shaping of lead wire portion 40 has the spacing strip 45 that matches in spacing groove 34. The fit between the bobbin and the magnetic core 30 is made more secure and precise.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A multi-winding flat transformer is characterized by comprising a winding framework, coils and two magnetic cores, wherein the winding framework is of a transverse flat sleeve-shaped structure, the coils are wound on the outer side of the winding framework, the magnetic cores are of an E-shaped structure, the two magnetic cores are respectively inserted transversely along two ends of the winding framework and are butted with each other, and the coils and the magnetic cores are matched in an electromagnetic induction mode; the lower part of bobbin has the lead wire portion along its both ends outside extension shaping respectively, and many lead wire grooves towards bobbin are seted up to the lower extreme of lead wire portion, and many lead wire grooves are the extension type along the extension end of lead wire portion and extend, and the extension tip of lead wire portion is provided with many pins, has still covered the heating panel at the lower extreme of lead wire portion, and the heating panel is connected with the coil heat conduction.

2. The multi-winding flat transformer according to claim 1, wherein the bobbin has two ends respectively extended with a blocking frame, and the coil is confined between the two blocking frames.

3. A multi-winding flat transformer according to claim 2, wherein the lead slots are adapted to engage the blocking frame, and the ends of the coil extend across the blocking frame and along the lead slots to the leads.

4. The multi-winding flat transformer according to claim 1, wherein the bobbin has a flat square structure, the two sides of the lead portion extend outward, and the plurality of lead slots are distributed in an expanding manner from an end close to the bobbin to an end away from the bobbin.

5. The multi-winding flat transformer according to claim 1, wherein the magnetic cores include an insertion portion corresponding to an inner side of the coil, an extension portion corresponding to an outer side of the coil, and a transition portion integrally connected to the insertion portion and the extension portion, the magnetic cores are inserted into the bobbin through the insertion portion, and the insertion portion and the extension portion of the two magnetic cores are butt-fitted to each other.

6. The flat transformer with multiple windings according to claim 5, wherein the lower end of the transition portion abuts against the lead portion, a limit groove is formed in the middle of the lower end of the transition portion, and a limit bar matched with the limit groove is formed on the lead portion.

7. The multi-winding flat transformer according to claim 1, wherein the heat dissipating plate is provided with an insulating heat conductive paste, and the heat dissipating plate is thermally connected to the coil through the insulating heat conductive paste.