CN101692390A

CN101692390A - ultra-thin transformer

Info

Publication number: CN101692390A
Application number: CN200910180550A
Authority: CN
Inventors: 朱锦良
Original assignee: JIANGSU TAICHANG ELECTRONICS CO Ltd
Current assignee: JIANGSU TAICHANG ELECTRONICS CO Ltd
Priority date: 2009-10-20
Filing date: 2009-10-20
Publication date: 2010-04-07

Abstract

The invention discloses an ultra-thin transformer, which comprises a shell, a framework, a primary coil, a secondary coil, a plurality of pins and an iron core, wherein the framework is arranged in the shell, the primary coil and the secondary coil are wound on the framework, the plurality of pins are connected with the primary coil and the secondary coil respectively and at least part of the pins are exposed outside the shell, and the iron core is arranged inside the framework. The external surface of the framework is provided with a plurality of rib rings extended along the circumferential direction, the plurality of rib rings divide the external surface of the framework into a plurality of mounting grooves used for mounting the primary coil and the secondary coil, the primary coil is wound in the mounting grooves at one side of the framework, and the secondary coil is wound in the mounting grooves at the other side of the framework. The invention solves the problems of the prior art, and provides the ultra-thin transformer with smaller integral height and better safety performance.

Description

A kind of ultra-thin transformer

Technical field

The present invention relates to a kind of ultra-thin transformer.

Background technology

Along with the high speed development of very lagre scale integrated circuit (VLSIC) and printed circuit board surface packing density, the power-supply system miniaturization development that appears as of ultra-thin transformer provides possibility.Ultra-thin transformer of the prior art as shown in Figure 1, it comprises housing 1, be arranged on skeleton 2 in the housing 1, be wrapped in primary coil 3 and secondary coil 4 on the skeleton 2, a plurality of be connected with primary coil 3 and secondary coil 4 respectively and have at least part be exposed to housing 1 outside pin 5, be arranged in the iron core 6 of skeleton 2 inside.As can be seen, skeleton 2 is made up of primary coil skeleton and secondary coil skeleton, the primary coil skeleton is sheathed on the outside of iron core 6, primary coil 3 is wound on the primary coil skeleton, the secondary coil skeleton is sheathed on the outside of primary coil 3, secondary coil 4 is wound on the secondary coil skeleton, recently realizes adjusting to output voltage by the number of turn of adjusting input coil and output winding.For this ultra-thin transformer, at first,, cause the whole height of transformer bigger because secondary coil is sheathed on the periphery of primary coil; Secondly, in order to reduce the whole height of transformer, often the spacing of primary coil and secondary coil is very narrow and small, has the risk that punctures, and has therefore reduced stability comparatively speaking.

Summary of the invention

For overcoming above-mentioned shortcoming, the object of the present invention is to provide the less and a kind of ultra-thin transformer of better safety performance of whole height.

In order to reach above purpose, the technical solution used in the present invention is: a kind of ultra-thin transformer, it comprises housing, be arranged on the skeleton in the described housing, be wrapped in primary coil and secondary coil on the described skeleton, a plurality ofly be connected with described primary coil and secondary coil respectively and have at least part to be exposed to the pin of described outside, be arranged in the iron core of described skeleton inside, described skeleton outer surface has the rib circle that circumferentially extend on a plurality of edges, described a plurality of rib circle is divided into a plurality of mounting grooves that are used to install described primary coil and secondary coil with the outer surface of described skeleton, described primary coil is wound in the mounting groove of described skeleton one side, described secondary coil is wound in the mounting groove of described skeleton opposite side, primary coil and secondary coil are installed on respectively with in one deck, have reduced the whole height of ultra-thin transformer.

Preferably, described primary coil comprises a plurality of input coil groups that are arranged in order, described secondary coil comprises a plurality of output winding groups that are arranged in order, and a plurality of different pins can be connected with the tap of each coil groups respectively, to draw the voltages having different magnitude value.

Further, the mounting groove that is used to install described primary coil on the described skeleton is provided with separately with the mounting groove that is used to install described secondary coil, to strengthen the insulation property between primary coil and the secondary coil.

Owing to adopted technique scheme, make that the whole height of ultra-thin transformer is reduced significantly, meanwhile insulation property are further strengthened, and for the closeness of power supply miniaturization and integrated circuit outstanding contribution are arranged.

Description of drawings

Accompanying drawing 1 is the cutaway view of ultra-thin transformer in the prior art;

Accompanying drawing 2 is the vertical view according to the embodiment of the invention;

Accompanying drawing 3 is along the cutaway view of A-A in the accompanying drawing 2;

Accompanying drawing 4 is along the cutaway view of B-B in the accompanying drawing 2.

Wherein: 1, housing; 2, skeleton; 3, primary coil; 4, secondary coil; 5, pin; 6, iron core; 21, rib circle.

Embodiment

Below in conjunction with accompanying drawing preferred embodiment of the present invention is described in detail, thereby protection scope of the present invention is made more explicit defining so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that.

Referring to accompanying drawing 2 to accompanying drawing 4, a kind of ultra-thin transformer, it comprises housing 1, be arranged on the skeleton 2 in the housing 1, be wrapped in primary coil 3 and secondary coil 4 on the skeleton 2, a plurality ofly be connected with primary coil 3 and secondary coil 4 respectively and have at least part to be exposed to the pin 5 of housing 1 outside, be arranged in the iron core 6 of skeleton 2 inside, skeleton 2 outer surfaces have the rib circle 21 that circumferentially extend on a plurality of edges, a plurality of rib circles 21 are divided into a plurality of mounting grooves that are used to install primary coil 3 and secondary coil 4 with the outer surface of skeleton 2, primary coil 3 is wound in the mounting groove of skeleton 2 one sides, and secondary coil 4 is wound in the mounting groove of skeleton 2 opposite sides.

Primary coil 3 can comprise a plurality of input coil groups that are arranged in order, secondary coil 4 also can comprise a plurality of output winding groups that are arranged in order, a plurality of different pins can be connected with the tap of each coil groups respectively, to draw multiple voltages having different magnitude value.

Shown in accompanying drawing 4, the mounting groove that is used to install primary coil 3 on the skeleton 2 is provided with separately with the mounting groove that is used to install secondary coil 4, to strengthen the insulation property between primary coil and the secondary coil.

By above-mentioned execution mode, be not difficult to find out that the present invention is the less and a kind of ultra-thin transformer of better safety performance of whole height.

Abovely the present invention is described in detail in conjunction with execution mode; only be explanation technical conceive of the present invention and characteristics; its purpose is to allow the people that is familiar with this technology understand content of the present invention and is implemented; can not limit protection scope of the present invention with this; all equivalences that spirit is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.

Claims

1. ultra-thin transformer, it comprises housing (1), be arranged on the skeleton (2) in the described housing (1), be wrapped in primary coil (3) and secondary coil (4) on the described skeleton (2), a plurality ofly be connected with described primary coil (3) and secondary coil (4) respectively and have at least part to be exposed to the outside pin (5) of described housing (1), be arranged in the inner iron core (6) of described skeleton (2), it is characterized in that: described skeleton (2) outer surface has the rib circle (21) that circumferentially extend on a plurality of edges, described a plurality of rib circles (21) are divided into a plurality of mounting grooves that are used to install described primary coil (3) and secondary coil (4) with the outer surface of described skeleton (2), described primary coil (3) is wound in the mounting groove of described skeleton (2) one sides, and described secondary coil (4) is wound in the mounting groove of described skeleton (2) opposite side.

2. a kind of ultra-thin transformer according to claim 1 is characterized in that: described primary coil (3) comprises a plurality of input coil groups that are arranged in order, and described secondary coil (4) comprises a plurality of output winding groups that are arranged in order.

3. a kind of ultra-thin transformer according to claim 2 is characterized in that: the mounting groove that is used to install described primary coil (3) on the described skeleton (2) is provided with separately with the mounting groove that is used to install described secondary coil (4).