CN202285194U

CN202285194U - Flat transformer

Info

Publication number: CN202285194U
Application number: CN2011203497658U
Authority: CN
Inventors: 马红中; 李华土
Original assignee: Dongguan Pulse Electronics Co Ltd
Current assignee: Dongguan Pulse Electronics Co Ltd
Priority date: 2011-09-19
Filing date: 2011-09-19
Publication date: 2012-06-27
Anticipated expiration: 2021-09-19

Abstract

The utility model discloses a flat transformer, which comprises a base, a first magnetic core, a second magnetic core and a flat enameled coil, wherein a plurality of pins are arranged on the base; the first magnetic core is fixed on the base; the second magnetic core is fixed on the first magnetic core; the flat enameled coil is fixedly arranged between the first magnetic core and the second magnetic core and provided with an input end and an output end; and the input end and the output end are electrically connected with the corresponding pins. Therefore, the flat enameled coil serves as a winding and replaces the conventional printed circuit board, so that the printed circuit board is not required for manufacturing and production of the flat transformer, and the manufacturing cost of the flat transformer can be reduced; meanwhile, the resistance of the flat enameled coil is lower than that of the printed circuit board, and the working efficiency of the flat transformer can be improved, so that the service performance of the flat transformer is improved.

Description

Flat-plate transformer

Technical field

The utility model relates to the field transformer technology, refers in particular to the flat-plate transformer that a kind of cost is low, easy to assembly, performance is high.

Background technology

Flat-plate transformer is compared maximum difference and is iron core and coil windings with traditional transformer.Flat surface transformer is adopted FERRITE CORE, is normally processed by high-frequency power ferrite material, and lower core loss is arranged under high frequency; Its winding adds copper sheet by multilayer board or multilayer board and forms, and has low D.C. resistance, the characteristics of low leakage inductance, and it is very flat that size can be done.Operating frequency greater than the condition of work of 200KHz under efficiency far be higher than traditional transformer, along with energy-saving and emission-reduction are worldwide promoted, the market demand of flat-plate transformer is with increasing.

Above-mentioned existing flat-plate transformer structure; Really has progressive; But, reality but finds still to have many deficiencies on himself structure and the serviceability when using; Cause existing flat-plate transformer in practical application, fail to reach best result of use and task performance, its shortcoming is summarized as follows at present:

At first, though above-mentioned employing printed circuit board (PCB) can play the winding effect, yet printed circuit board (PCB) costs an arm and a leg, and has increased the manufacturing production cost of flat-plate transformer; And its resistance of winding that adopts printed circuit board (PCB) to process is big, is not suitable for high-power requirement, thereby causes the serviceability of product not good enough.

Secondly; Mode each printed circuit board (PCB) when connection is installed that above-mentioned employing printed circuit board (PCB) is processed winding need add stitch; In order to make stitch have oxidation resistant characteristic, the surface of this stitch needs gold-plated and adopts ferrochrome to be welded to connect, and makes that the production and assembly efficient of product is lower.

The utility model content

In view of this, the utility model is to the disappearance of prior art existence, and its main purpose provides a kind of flat-plate transformer, and it can effectively solve existing flat-plate transformer and make production cost height, the not good problem of serviceability.

Another purpose of the utility model provides a kind of flat-plate transformer, and it can effectively solve the existing low problem of flat-plate transformer packaging efficiency.

For realizing above-mentioned purpose, the utility model adopts following technical scheme:

A kind of flat-plate transformer comprises base, first magnetic core, second magnetic core and flat enameled wire loop; This base is provided with a plurality of stitch; This first magnetic core is fixed on the base, and this second magnetic core is fixed on first magnetic core; This flat enameled wire loop is fixedly arranged between first magnetic core and second magnetic core, and flat enameled wire loop has input and output, and this input and output are electrically connected with aforementioned corresponding stitch respectively.

As a kind of preferred version, said first magnetic core is the E type, and the center of first magnetic core is provided with cylindrical wrapping post, and aforementioned flat enameled wire loop is set in outside the wrapping post, and this second magnetic core is the I type.

As a kind of preferred version, said flat enameled wire loop is a plurality of, and these a plurality of flat enameled wire loops are superimposed to be located between first magnetic core and second magnetic core together.

As a kind of preferred version, said a plurality of stitch are the flat stitch of L type, and these a plurality of stitch are arranged side by side the lateral margin in base, and the outside that the input of this flat enameled wire loop and output all stretch out magnetic core is electrically connected with corresponding stitch.

As a kind of preferred version, the input and the output of said flat enameled wire loop are provided with hanging hole, and the input of this each flat enameled wire loop and the output hanging hole through correspondence hang on the corresponding stitch and with corresponding stitch welding and is electrically connected.

The utility model compared with prior art has tangible advantage and beneficial effect, particularly, can be known by technique scheme:

One, through adopting flat enameled wire loop, replaced the printed circuit board (PCB) of tradition, made need not use printed circuit board (PCB), utilized the manufacturing production cost of reduction product in the manufacturing of flat-plate transformer with in producing as winding; And the resistance of flat enameled wire loop is little than the resistance of printed circuit board (PCB), helps improving the operating efficiency of product, thereby promotes the serviceability of product.

Two, be provided with hanging hole through input and output in flat enameled wire loop; And cooperate utilize base on stitch; Make input and the output of flat enameled wire loop hang on the corresponding stitch and and be electrically connected that welding has replaced the traditional hand welding automatically, and is simple in structure with corresponding stitch welding through hanging hole; Easy to assembly, help improving the production and assembly efficient of product.

Be architectural feature and the effect of more clearly setting forth the utility model, come the utility model is elaborated below in conjunction with accompanying drawing and specific embodiment.

Description of drawings

Fig. 1 is the assembling schematic perspective view of the preferred embodiment of the utility model;

Fig. 2 is the exploded view of the preferred embodiment of the utility model;

Fig. 3 is the enlarged diagram of base in the preferred embodiment of the utility model.

The accompanying drawing identifier declaration:

10, base 11, stitch

20, first magnetic core 21, wrapping post

30, second magnetic core 40, flat enameled wire loop

41, input 42, output

401, hanging hole.

Embodiment

Please referring to figs. 1 through shown in Figure 3, the concrete structure that it has demonstrated the preferred embodiment of the utility model comprises base 10, first magnetic core 20, second magnetic core 30 and flat enameled wire loop 40.

Wherein, this base 10 is provided with a plurality of stitch 11, and these a plurality of stitch 11 are arranged side by side, and in the present embodiment, is provided with row's stitch 11 on the two opposite sides edge of this base 10, and the quantity of stitch 11 and installation site will not be limited to; And each stitch 11 is the flat stitch of L type, and the shape of stitch 11 will not be limited to.

This first magnetic core 20 is fixed on the aforementioned base 10, and first magnetic core 20 is the E type, and the center of first magnetic core 20 is provided with cylindrical wrapping post 21.This second magnetic core 30 is the I type, and second magnetic core 30 is fixed on first magnetic core 20.Certainly, this first magnetic core 20 is not limited to and is the E type, and this second magnetic core 30 also is not limited to the I type, and they also can be all E type or other different shape.

This flat enameled wire loop 40 is as the primary and secondary of transformer; Flat enameled wire loop 40 is fixedly arranged between aforementioned first magnetic core 20 and second magnetic core 30; In the present embodiment; This flat enameled wire loop 40 is a plurality of, and the quantity of flat enameled wire loop 40 is not limit, and this a plurality of flat enameled wire loop 40 is superimposed, and to be set in aforementioned wrapping post 21 together outer and be located between first magnetic core 20 and second magnetic core 30; Each flat enameled wire loop 30 all has input 41 and output 42; Input 41 is electrically connected with corresponding stitch 11 with the outside that output 42 all stretches out magnetic core 20; In the present embodiment; Be provided with hanging hole 401 on this input 41 and the output 42, this input 41 and output 42 hanging hole 401 through correspondence hang on the corresponding stitch 11 and with corresponding stitch 11 welding and is electrically connected.

The assembling process that present embodiment is detailed is following:

The assembling process of present embodiment is very simple, and is as shown in Figure 2, at first, first magnetic core 20 is fixed on the base 10; Then; These a plurality of flat enameled wire loops 40 are set on the wrapping post 21 on first magnetic core 20 successively; The input 41 of each flat enameled wire loop 40 is hung on the corresponding stitch 11 through hanging hole 401 with output 42; And the input 41 of flat enameled wire loop 40 and output 42 are electrically connected with corresponding stitch 11 scolding tin, can use bonding machine to weld automatically; At last, second magnetic core 30 is mounted on first magnetic core 20, makes that these a plurality of flat enameled wire loops 40 are located between first magnetic core 20 and second magnetic core 30 assembled (as shown in Figure 1).

The design focal point of the utility model is: at first; Through adopting flat enameled wire loop as winding; The printed circuit board (PCB) that has replaced tradition makes need not use printed circuit board (PCB) in the manufacturing of flat-plate transformer with in producing, and utilizes the manufacturing production cost that reduces product; And the resistance of flat enameled wire loop is little than the resistance of printed circuit board (PCB), helps improving the operating efficiency of product, thereby promotes the serviceability of product.Secondly; Input and output through in flat enameled wire loop are provided with hanging hole, and cooperate utilize base on stitch, make input and the output of flat enameled wire loop hang on the corresponding stitch through hanging hole and with corresponding stitch welding electrical connection; Automatically welding has replaced the traditional hand welding; Simple in structure, easy to assembly, help improving the production and assembly efficient of product.

The above; It only is the preferred embodiment of the utility model; Be not that the technical scope of the utility model is done any restriction; So every technical spirit according to the utility model all still belongs in the scope of the utility model technical scheme any trickle modification, equivalent variations and modification that above embodiment did.

Claims

1. a flat-plate transformer is characterized in that: comprise base, first magnetic core, second magnetic core and flat enameled wire loop; This base is provided with a plurality of stitch; This first magnetic core is fixed on the base, and this second magnetic core is fixed on first magnetic core; This flat enameled wire loop is fixedly arranged between first magnetic core and second magnetic core, and flat enameled wire loop has input and output, and this input and output are electrically connected with aforementioned corresponding stitch respectively.

2. flat-plate transformer according to claim 1 is characterized in that: said first magnetic core is the E type, and the center of first magnetic core is provided with cylindrical wrapping post, and aforementioned flat enameled wire loop is set in outside the wrapping post, and this second magnetic core is the I type.

3. flat-plate transformer according to claim 2 is characterized in that: said flat enameled wire loop is a plurality of, and these a plurality of flat enameled wire loops are superimposed to be located between first magnetic core and second magnetic core together.

4. flat-plate transformer according to claim 1; It is characterized in that: said a plurality of stitch are the flat stitch of L type; These a plurality of stitch are arranged side by side the lateral margin in base, and the outside that the input of this flat enameled wire loop and output all stretch out magnetic core is electrically connected with corresponding stitch.

5. according to claim 1 or 4 described flat-plate transformers; It is characterized in that: the input and the output of said flat enameled wire loop are provided with hanging hole, and the input of this each flat enameled wire loop and the output hanging hole through correspondence hang on the corresponding stitch and with corresponding stitch welding and is electrically connected.